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* TT is this to all the other cats in ''WebVideo/CreamHeroes''. Despite her standoffish nature, she will mentor the younger cats keep them in line. This even extends to newcomer Nana and her two kittens. Nana has become her friend while Toto and Dodo are the only cats allowed to punch her without getting hit in return (at least for now).
** Chuchu became this for Toto and especially Dodo. When Claire moved home, Chuchu sat with Dodo in the carrier, tried to comfort him on arrival and stood by him until she was certain he was alright.


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* TT is this to all the other cats in ''WebVideo/{{Kittisaurus}}''. Despite her standoffish nature, she will mentor the younger cats keep them in line. This even extends to newcomer Nana and her two kittens. Nana has become her friend while Toto and Dodo are the only cats allowed to punch her without getting hit in return (at least for now).
** Chuchu became this for Toto and especially Dodo. When Claire moved home, Chuchu sat with Dodo in the carrier, tried to comfort him on arrival and stood by him until she was certain he was alright.
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* Subverted in the Creator/MaeveBinchy novel ''Literature/EveningClass'', when a young girl assumes her older sister Fran is this, citing the numerous things Fran has done for her since childhood -- buying her school clothes, helping her with her homework, giving her "the talk", taking her on day trips to the city, arranging Italian lessons, etc. She outright says, "I just thought she was a marvelous big sister" when talking with her father--who she's just met for the first time because she's just learned that Fran is actually her ''mother''.

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* Subverted in the Creator/MaeveBinchy novel ''Literature/EveningClass'', when a young girl assumes her older sister Fran is this, citing the numerous things Fran has done for her since childhood -- buying her school clothes, helping her with her homework, giving her "the talk", "TheTalk", taking her on day trips to the city, arranging Italian lessons, etc. She outright says, "I just thought she was a marvelous big sister" when talking with her father--who she's just met for the first time because she's just learned that Fran is actually her ''mother''.
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* Kate Godwin was this to Dorothy in ''ComicBook/DoomPatrol'', [[spoiler: which makes the fact she accidentally killed her all the more tragic.]]
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* ''Literature/ACertainMagicalIndex'':
** Touma apparently has a fetish for Cool Big Sis types, though he tries to keep it quiet. Kaori is the only one in his UnwantedHarem who would fit the type, and even that's a little bit of a stretch (she's the Cool Big Sis to some of his haremettes, but not to Touma).
** Fukiyose Seiri is good at depicting this image. She's also hijacked the role of ClassRepresentative on a number of occasions.
** Shizuri Mugino acts as one to the other members of Team ITEM, but she's also AxCrazy and wouldn't think twice about killing them before her HeelFaceTurn.


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* Melissa Mao from ''Literature/FullMetalPanic''. She mentions the trope almost by name when she confronts Sousuke about [[HeroicBSOD spacing out in the middle of a mission]]. Not to mention that Kurz calls her "Sis."


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* Aoi Kimi of ''Literature/HorizonInTheMiddleOfNowhere''. As the protagonist's slightly older sister, she's about the same age as most of the rest of the main cast, but definitely plays TeamMom. She's also a flamboyant pervert.


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* ''Literature/IfHerFlagBreaks'': Kikuno is Souta's self-declared big sister, so she does sisterly things for him, such as making him lunches, giving him advice, and being a little too affectionate sometimes. She also acts like a big sister figure to the rest of the cast.


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%%* Anehara Misa in ''Literature/ModernMagicMadeSimple''.
* ''Literature/MyNextLifeAsAVillainessAllRoutesLeadToDoom'': Catarina attempts to be this to her adoptive brother Keith, partly because she wants a better ending[[note]]In the original ''Fortune Lover'' otome game, Catarina's abusive behavior lead to Keith either killing her with magic or forcing her into exile[[/note]] and partly because she always wanted a little brother [[{{Reincarnation}} in her original life]]. While she qualifies during their childhood, by the time they're teenagers the level-headed and responsible Keith has become her CloudcuckoolandersMinder... and [[BigBrotherAttraction he's nursing an attraction to her]].


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* ''Literature/RebuildWorld'':
** Shizuka takes the role of a positive mentor figure in Akira's life. Unlike Alpha, who is manipulating him for her ends, Shizuka genuinely wishes the best for Akira, frets over him when she hears that he's done something dangerous, and does her best to make sure he's properly equipped to survive in the wastelands. Her opinion of him only grows after learning that he saved her friends Sara and Elena. There is some significant overlap with the TeamMom role she plays for the three.
** The BrainsAndBrawn HeterosexualLifePartners Elena and Sara are a more straightforward match for the trope, each being like a BigSisterMentor but also teasing Akira extensively. Unlike Shizuka, Akira sees the two as his respected seniors he's trying to catch up to, a line of thinking he holds onto even after exceeding them in hunter rank.
** A more moderate dynamic develops between the Sheryl and the older Carol. Sheryl sees Carol like someone intimidating who she has to catch up to, despite a bad first impression. Carol clearly likes Sheryl, has fun teasing her, and helps her, realizing how important she is for Akira, although Akira repeatedly assigning Carol to protect Sheryl is somewhat disheartening for both.
* ''Literature/ScrappedPrincess'': While Pacifica looks to both her adopted siblings for protection, Racquel is the one she turns to when needs someone to confide in. At one point, she even tells Racquel that she had hoped to be as good a big sister to Cz[[note]]who was revealed to be a Peacemaker and reverted to her true form against her will, by Styer[[/note]] as Racquel was to her and Shannon, who shares Pacifica's sentiment. Near the end, [[ManlyTears when he finally breaks down in tears]][[note]]after returning from the final battle with the Peacemakers, with Pacifica [[BackFromTheDead having come back to life]][[/note]], Racquel provides him with a shoulder to cry on.


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* Two subversions in ''Literature/{{Slayers}}''; While Lina is the first to admit that her older sister Luna is "really cool" she's also terrified of her [[NoodleIncident due to some unfortunate events during their childhood ]] ([[SubvertedTrope not that Lina didn't deserve it]]). (Lina is so scared of Luna that near the end of Slayer's Try she actually says (entirely without irony) that she has to save the universe because otherwise "my big sister is gonna kill me.") Amelia's older sister Gracia [[spoiler:AKA [[GoldfishPoopGang Naga the White Serpent]]]] did teach her some magic (per WordOfGod) but she also ran away after witnessing the horrifically bloody assassination of their mother. Amelia hasn't met her since, and (in the novels at least) misses her terribly.

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** [[ComicBook/{{Batgirl}} Barbara Gordon]] is usually the cool big sis type for [[ComicBook/{{Nightwing}} Dick Grayson]] (until they formed a relationship), Jason Todd (in the ComicBook/New52), [[ComicBook/{{Robin}} Tim Drake]] (especially prior to Flashpoint and in ''WesternAnimation/BatmanTheAnimatedSeries'') and ''sometimes'' [[https://i.pinimg.com/originals/b7/e1/f3/b7e1f32e76cbc68fc582cc11e76feec1.jpg to Damian Wayne]].

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** [[ComicBook/{{Batgirl}} [[Characters/{{Batgirl}} Barbara Gordon]] is usually the cool big sis type for [[ComicBook/{{Nightwing}} [[Characters/NightwingDickGrayson Dick Grayson]] (until they formed a relationship), [[Characters/BatmanJasonTodd Jason Todd Todd]] (in the ComicBook/New52), [[ComicBook/{{Robin}} [[Characters/RobinTimDrake Tim Drake]] (especially prior to Flashpoint ComicBook/{{Flashpoint|DCComics}} and in ''WesternAnimation/BatmanTheAnimatedSeries'') and ''sometimes'' [[https://i.pinimg.com/originals/b7/e1/f3/b7e1f32e76cbc68fc582cc11e76feec1.jpg to Damian Wayne]].



** ComicBook/{{Huntress}} also plays this role for Tim Drake, viewing him as an endearingly annoying little brother. She occasionally plays TeamMom during teams up like in ''ComicBook/PublicEnemies'' when Tim and Cassandra Cain are goofing around during the mission and Huntress tells them off.
* ''ComicBook/BlackCanary'': Towards Roy Harper, Conner Hawke, and Mia Dearden, as well as Emiko Queen in ''ComicBook/GreenArrowRebirth'', not to mention Sin. Thanks to the significant age gap between her and Oliver, she was actually closer in age to his ward and son, so while technically she's their adopted stepmom, they generally saw her as more like a sister. She was also this to Stephanie Brown briefly, though her relationship with the Batkids hasn't been as explored.
* ComicBook/{{Dollicious}} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.

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** ComicBook/{{Huntress}} [[Characters/BatmanHuntress Huntress]] also plays this role for Tim Drake, viewing him as an endearingly annoying little brother. She occasionally plays TeamMom during teams up like in ''ComicBook/PublicEnemies'' when Tim and Cassandra Cain are goofing around during the mission and Huntress tells them off.
* ''ComicBook/BlackCanary'': Towards Black Canary is this towards Roy Harper, Conner Hawke, and Mia Dearden, as well as Emiko Queen in ''ComicBook/GreenArrowRebirth'', not to mention Sin. Thanks to the significant age gap between her and Oliver, she was actually closer in age to his ward and son, so while technically she's their adopted stepmom, they generally saw her as more like a sister. She was also this to Stephanie Brown briefly, though her relationship with the Batkids hasn't been as explored.
* ComicBook/{{Dollicious}} has ''ComicBook/{{Dollicious}}'': SupremeChef Ramnen taking takes her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.



%%Administrivia.PartialContextExample* In ''ComicBook/GhostSpider2019'', Peter assists [[ComicBook/SpiderGwen Gwen]] as she navigates Earth-616 as both a student and a hero.
* ''ComicBook/TheSandman1989'' includes Death, who is the sweetest, gentlest girl anyone could ever meet. She loves everyone, and everyone, audience included, loves her. She is by far the sanest of the Endless, and is able to provide a pragmatic perspective to her younger brother, the anguished poet Dream. Most importantly, she is extremely badass when it is called for, and is the only one of the Endless who "is bound by no rules." The ironic contrast between the kind and beautiful Death and the typical Grim Reaper archetype is deliberate and effective. That said, based on ''Endless Nights'', it took her some time to grow into the role, as she was much less pleasant when younger ("some time" being on the order of billions of years).

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%%Administrivia.PartialContextExample* In ''ComicBook/GhostSpider2019'', Peter assists [[ComicBook/SpiderGwen Gwen]] as she navigates Earth-616 as both a student and a hero.
* ''ComicBook/TheSandman1989'' includes ''ComicBook/TheSandman1989'': Death, who is the sweetest, gentlest girl anyone could ever meet. She loves everyone, and everyone, audience included, loves her. She is by far the sanest of the Endless, and is able to provide a pragmatic perspective to her younger brother, the anguished poet Dream. Most importantly, she is extremely badass when it is called for, and is the only one of the Endless who "is bound by no rules." The ironic contrast between the kind and beautiful Death and the typical Grim Reaper archetype is deliberate and effective. That said, based on ''Endless Nights'', it took her some time to grow into the role, as she was much less pleasant when younger ("some time" being on the order of billions of years).



%%Administrivia.ZeroContextExample* After Orube in ''ComicBook/{{WITCH}}'' gets over her ArrogantKungFuGuy attitude, she becomes this to the Guardians.
* ''ComicBook/WonderWoman1987'': ComicBook/WonderGirl Cassie Sandsmark really looks up to and admires the first Wonder Girl, ContinuitySnarl/DonnaTroy who was the first adult to take her seriously as a hero instead of trying to talk her out of it and gifted her the bullet-proof bracelets Donna wore during her time as Wonder Girl.
%%Administrivia.ZeroContextExample* ''All New ComicBook/XFactor'': ComicBook/ScarletWitch tries to be this for her half-sister Polaris.
* ''Franchise/XMen'':
** Originally ComicBook/JeanGrey was this to newcomer ComicBook/{{Storm|MarvelComics}}, Storm was this to then newcomer ComicBook/{{Rogue}} and then Rogue became this to ComicBook/{{Nightcrawler}} when she learned he was the son of her surrogate mother ComicBook/{{Mystique}}.
** When ComicBook/{{Jubilee|MarvelComics}} shows up Jean, Storm and Rogue alternate between this for her.
** Storm also filled this role toward ComicBook/KittyPryde. She calls the younger woman "Kitten" as a mark of affection and to ComicBook/{{Colossus}} and Nightcrawler, both of whom she affectionately calls "little brother".

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%%Administrivia.ZeroContextExample* After Orube in ''ComicBook/{{WITCH}}'' gets over her ArrogantKungFuGuy attitude, PartialContextExample** In ''ComicBook/GhostSpider2019'', Peter assists [[ComicBook/SpiderGwen Gwen]] as she becomes this to the Guardians.
* ''ComicBook/WonderWoman1987'': ComicBook/WonderGirl Cassie Sandsmark really looks up to
navigates Earth-616 as both a student and admires the first Wonder Girl, ContinuitySnarl/DonnaTroy who was the first adult to take her seriously as a hero instead of trying to talk her out of it and gifted her the bullet-proof bracelets Donna wore during her time as Wonder Girl.
hero.
%%Administrivia.ZeroContextExample* ''ComicBook/{{WITCH}}'': After Orube gets over her ArrogantKungFuGuy attitude, she becomes this to the Guardians.
* ''ComicBook/WonderWoman'' [[ComicBook/WonderWoman1987 Vol. 2]]: ComicBook/WonderGirl [[Characters/WonderGirlCassieSandsmark Cassie Sandsmark]] really looks up to and admires the first Wonder Girl, Donna Troy who was the first adult to take her seriously as a hero instead of trying to talk her out of it and gifted her the bullet-proof bracelets Donna wore during her time as Wonder Girl.
%%Administrivia.ZeroContextExample* ''ComicBook/XFactor'': In
''All New ComicBook/XFactor'': ComicBook/ScarletWitch X-Factor'': Characters/ScarletWitch tries to be this for her half-sister Polaris.
* ''Franchise/XMen'':
''ComicBook/XMen'':
** Originally ComicBook/JeanGrey [[Characters/MarvelComicsJeanGrey Jean Grey]] was this to newcomer ComicBook/{{Storm|MarvelComics}}, [[Characters/MarvelComicsStorm Storm]], Storm was this to then newcomer ComicBook/{{Rogue}} [[Characters/MarvelComicsRogue Rogue]] and then Rogue became this to ComicBook/{{Nightcrawler}} [[Characters/MarvelComicsNightcrawler Nightcrawler]] when she learned he was the son of her surrogate mother ComicBook/{{Mystique}}.
[[Characters/MarvelComicsMystique Mystique]].
** When ComicBook/{{Jubilee|MarvelComics}} [[Characters/MarvelComicsJubilee Jubilee]] shows up Jean, Storm and Rogue alternate between this for her.
** Storm also filled this role toward ComicBook/KittyPryde. [[Characters/MarvelComicsKittyPryde Kitty Pryde]]. She calls the younger woman "Kitten" as a mark of affection and to ComicBook/{{Colossus}} [[Characters/XMen70sMembers Colossus]] and Nightcrawler, both of whom she affectionately calls "little brother".



** Despite a few [[HeelFaceTurn betrayals]] ComicBook/{{Psylocke}} and ComicBook/EmmaFrost can be this for the younger X-Men.
** Although the timeline of events indicates Megan is actually somewhat older, her ''far'' more experienced cousin, Laura Kinney aka ComicBook/{{X 23}}, takes this role in their relationship.

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** Despite a few [[HeelFaceTurn betrayals]] ComicBook/{{Psylocke}} [[Characters/MarvelComicsPsylocke Psylocke]] and ComicBook/EmmaFrost [[Characters/MarvelComicsEmmaFrost Emma Frost]] can be this for the younger X-Men.
** Although the timeline of events indicates Megan is actually somewhat older, her ''far'' more experienced cousin, Laura Kinney aka ComicBook/{{X 23}}, [[Characters/MarvelComicsLauraKinney X-23]], takes this role in their relationship.
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* Music/SaintMotel's song "Sisters" is about "[giving] it up for sisters and all the things they do; not always so wonderful, but we'd be lost without [them]". Between the choruses, the singer fondly reminisces on various antics they had with their (implicitly older) sister, like being introduced to Main/RockAndRoll through her, or being allowed to tag along to a club with them and having to drive her back (despite not having an actual driver's education).

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* ComicBook/SpiderMan, by now in his late twenties, tends to act as an older brother figure to several other younger heroes in the Marvel Universe whenever he makes guest appearances in their books.
** ComicBook/MilesMorales, the younger, less experienced Spider-Man has been mentored by Peter ever since ''ComicBook/SecretWars2015'', since he's only been Spider-Man for a few years.

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* ComicBook/SpiderMan, ''ComicBook/SpiderMan'':
** [[Characters/MarvelComicsPeterParker Peter Parker]],
by now in his late twenties, tends to act as an older brother figure to several other younger heroes in the Marvel Universe whenever he makes guest appearances in their books.
** ComicBook/MilesMorales, [[Characters/MarvelComicsMilesMorales Miles Morales]], the younger, less experienced Spider-Man has been mentored by Peter ever since ''ComicBook/SecretWars2015'', since he's only been Spider-Man for a few years.



** Originally Comicbook/JeanGrey was this to newcomer ComicBook/{{Storm|MarvelComics}}, Storm was this to then newcomer ComicBook/{{Rogue}} and then Rogue became this to ComicBook/{{Nightcrawler}} when she learned he was the son of her surrogate mother ComicBook/{{Mystique}}.

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** Originally Comicbook/JeanGrey ComicBook/JeanGrey was this to newcomer ComicBook/{{Storm|MarvelComics}}, Storm was this to then newcomer ComicBook/{{Rogue}} and then Rogue became this to ComicBook/{{Nightcrawler}} when she learned he was the son of her surrogate mother ComicBook/{{Mystique}}.



** Laura becomes a much more literal one in ''ComicBook/AllNewWolverine'' to Gabby, a 13 year-old clone created by [[Comicbook/SpiderMan2099 Alchemax Genetics]], who [[BigSisterWorship greatly looks up to her]].

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** Laura becomes a much more literal one in ''ComicBook/AllNewWolverine'' to Gabby, a 13 year-old clone created by [[Comicbook/SpiderMan2099 [[ComicBook/SpiderMan2099 Alchemax Genetics]], who [[BigSisterWorship greatly looks up to her]].
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** Antonio's admiration for Camilo manifests when the latter cheers him with his antics, despite being nervous about his ceremony. In a family photo, Camilo crouches down to the height of his younger brother to hug him.

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** Antonio's admiration for Camilo manifests when the latter cheers him with his antics, despite being nervous about his ceremony.antics. In a family photo, Camilo crouches down to the height of his younger brother to hug him.

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** Although they are actually cousins, Mirabel fulfills this role to Antonio, being the one to comfort and support him when he is feeling anxious. In fact Antonio seems to be closer to Mirabel than to his real siblings.

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** Although they are actually cousins, Mirabel fulfills this role to Antonio, being the one to comfort and support him when he is feeling anxious. In fact Antonio seems to be closer to Mirabel than to anxious.
** Antonio's admiration for Camilo manifests when the latter cheers him with
his real siblings.antics, despite being nervous about his ceremony. In a family photo, Camilo crouches down to the height of his younger brother to hug him.
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* In ''WesternAnimation/DannyPhantom'' fanfic ''Fanfic/ResurrectedMemories'': Ember during her first life as Amberline [=McLain=] was this to her little sister Amy. This comes back to [[JustForPun haunt]] Amy quite literally when decades later [[spoiler:she, now going by the nickname A.J. becomes a long-term substitute at Casper High around the same time that a still 16 year old but now half-ghost Ember infiltrates the school under the [[SarcasmMode very clever]] name of [[RealNameAsAnAlias Amberline]] ''Lain'' who then ends up saving Amy's younger daughter Maggie and befriending her older one Zoe all without Ember, Maggie or Zoe [[UnknownRelative ever suspecting their connection]].]]

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* In ''WesternAnimation/DannyPhantom'' fanfic ''Fanfic/ResurrectedMemories'': Ember during her first life as Amberline [=McLain=] was this to her little sister Amy. This comes back to [[JustForPun haunt]] [[LiteralMetaphor haunt Amy quite literally literally]] when decades later [[spoiler:she, now going by the nickname A.J. becomes a long-term substitute at Casper High around the same time that a still 16 year old but now half-ghost Ember infiltrates the school under the [[SarcasmMode very clever]] name of [[RealNameAsAnAlias Amberline]] ''Lain'' who then ends up saving Amy's younger daughter Maggie and befriending her older one Zoe all without Ember, Maggie or Zoe [[UnknownRelative ever suspecting their connection]].]]
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* In flashbacks on ''Series/TheWestWing'', a college age Jed Bartlett meets a young Mrs. Landingham, who says he needs a "big sister" to help guide him. She will later become his loyal but SassySecretary when he becomes President of the United States.

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* In flashbacks on ''Series/TheWestWing'', a college age Jed Bartlett Bartlet meets a young Mrs. Landingham, who says he needs a "big sister" to help guide him. She will later become his loyal but SassySecretary when he becomes President of the United States.
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* ComicBook/{{Dollicious]} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.

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* ComicBook/{{Dollicious]} ComicBook/{{Dollicious}} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.
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* {{ComicBook/Dollicious]} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.

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* {{ComicBook/Dollicious]} ComicBook/{{Dollicious]} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.
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* {{ComicBook/Dollicious]} has SupremeChef Ramnen taking her time while working to teach her younger sisters cooking skills and tries to be as fun as possible while doing this. She even read them recepies book to sleep.

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* ''Fanfic/ABalladOfTheDragonAndSheWolf'': Daenerys is this for Arya and it's a major theme. They quickly become close friends and confidants in part due to common experiences and even adopt each other as sisters. Arya's crush on Daenerys is purely Platonic, but that doesn't stop Sansa (ie her biological sister) from [[LesYay speculating there is something more going on]].
* ''Fanfic/ACrownOfStars'': Misato is a mix of ParentalSubstitute and this to Asuka and Shinji. In chapter 70 she calls herself this. With those exact words and capitalization.
-->'''Misato''':''"So I'll be your Cool Big Sis instead."''



* The ''Fanfic/AftermathOfTheGames'' universe has a few examples:
** Human Cadence, like her Equestrian counterpart, is this for Sci-Twi, comforting her during her post-Friendship Games nightmares, and [[spoiler:spends a night guarding her with a baseball bat after Sci-Twi was nearly kidnapped by the Changelings]].
** In this story, the human versions of Rainbow Dash and Scootaloo are [[RelatedInTheAdaptation related to one another]], with the former regarding that as obvious.
** Princess Twilight becomes Sunset's Big Sister Best Friend Forever, after the latter [[spoiler:ascends to alicornhood and Celestia asks to be their ParentalSubstitute]].
** Sunset became this to Apple Bloom after being adopted into the Apple Family, tutoring her on her homework and even forgiving her for the Anon-A-Miss incident. WordOfGod says Sunset has this relationship with Sci-Twi, with the former helping the latter through her nightmares and providing her advice and moral support.
** Adagio, despite her flaws, deeply cares for both Aria and Sonata, [[spoiler:even willing to team up with the Rainbooms to rescue them from the Changelings]].
* ''Fanfic/BecomingMoreThanWhatIAm'':
** The ArchangelGabriel is this to Max, having been the one to give her her sword and offering her advice when she needed it.
** Gender-Inverted. While Lucifer is annoyed that Max didn't take his side during the rebellion and Max felt that Lucifer was a traitor, otherwise Lucifer gets along with her more than their other siblings.
* ''Fanfic/ABalladOfTheDragonAndSheWolf'': Daenerys is this for Arya and it's a major theme. They quickly become close friends and confidants in part due to common experiences and even adopt each other as sisters. Arya's crush on Daenerys is purely Platonic, but that doesn't stop Sansa (ie her biological sister) from [[LesYay speculating there is something more going on]].
* ''Fanfic/TheBlackSheep'' by Creator/AAPessimal introduces Mariella Smith-Rhodes, who wants to grow up just like big sister Johanna. Mariella is evidently a ''sjaemboek'' cut from the same rhinoceros hide, as she has succeeded in being selected for education at the Assassins' Guild School against heavy competition.
** Much later in the cycle, Johanna's two younger daughters both have this relationship with their oldest sister Rebecka. Even the wild child of the three, [[{{Tykebomb}} Famke]], will shut up and do as she's told when Bekki gets ''insistent''. Ruth, the youngest of the three, adores her oldest sister and even schemes to fix her up with a boyfriend.
* Rachel in ''Fanfic/CardcaptorRad'', as despite being Rad's cousin, acts more like an older sister to him and his friends given she's extremely protective of them. Hot Shot also has been slowly evolving from his OneOfTheKids mentality to something of an older brother figure to the kids.
* Karai becomes something like this to Mikey in ''Fanfic/TheChroniclesOfKaraiGettingHerShitTogether'', often humoring his weirder habits and claims (coming find that [[ObfuscatingStupidity he is more aware of his surroundings that he seems]]) and even offers to beat up Raphael for him when he feels like he can't handle it.
* ''Fanfic/ACrownOfStars'': Misato is a mix of ParentalSubstitute and this to Asuka and Shinji. In chapter 70 she calls herself this. With those exact words and capitalization.
-->'''Misato''':''"So I'll be your Cool Big Sis instead."''



* ''Fanfic/ConstantsAndVariables'': Elizabeth acts as this to Harry. She sees the appalling situation with the Dursleys and immediately takes it upon herself to take him in (despite having no employment, money or living situation to speak of at the time). She helps him learn how to use his tear powers, sticks up for him when Snape gives him a hard time, takes him on field trips and vacations throughout the multiverse and helps him with his schemes when he suspects that the school is in danger in any way.



%%Administrivia.ZeroContextExample** ''Fanfic/DungeonKeeperAmi'' has [[IronLady Commander]] [[ActionGirl Cathy]] slowly becoming this to her new boss, [[ADungeonIsYou Keeper]] [[BadPowersGoodPeople Mercury]]. [[spoiler: And later on to Mercury's [[ItMakesSenseInContext adopted twin sister]], Tiger.]]
%%Administrivia.ZeroContextExample* ''Fanfic/RacerAndTheGeek'' features Rainbow Dash playing this [[http://www.fimfiction.net/story/81159/racer-and-the-geek role to Scootloo.]]
%%Administrivia.ZeroContextExample* ''Fanfic/RubyAndNora'': Yang is still this, and Winter plays this trope much more straight due to AdaptationalNiceGuy.

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%%Administrivia.ZeroContextExample** ''Fanfic/DungeonKeeperAmi'' has [[IronLady Commander]] [[ActionGirl Cathy]] slowly becoming this to her new boss, [[ADungeonIsYou Keeper]] [[BadPowersGoodPeople Mercury]]. [[spoiler: And [[spoiler:And later on to Mercury's [[ItMakesSenseInContext adopted twin sister]], Tiger.]]
%%Administrivia.ZeroContextExample* ''Fanfic/RacerAndTheGeek'' features Rainbow Dash playing * In ''Fanfic/EvaSessionsSomeplaceVastAndDry'', Misato is a straightforward example, as she is literally Shinji's and Rei's adopted older sister without the ParentalSubstitute and MrsRobinson subtexts of her canon counterpart; Asuka also fondly remembers her as her babysitter.
* ''Fanfic/FacingTheFutureSeries'': Once [[spoiler:Danielle]] joins the Fenton family, Danny and Jazz both grow into
this [[http://www.fimfiction.net/story/81159/racer-and-the-geek role easily.
* In ''Fanfic/FracturedFates'', Kaneki acts as this towards the [[TokenMiniMoe short]] and [[ShrinkingViolet timid]] Asuna. She also acted as this towards her actual younger sister, Yuna, [[spoiler:prior
to Scootloo.]]
%%Administrivia.ZeroContextExample* ''Fanfic/RubyAndNora'': Yang is still
her death]].
* ''Fanfic/GirlAdventurer'': Sarah sees Sheila as
this, and Winter plays this trope much more straight due to AdaptationalNiceGuy.Sheila also cares deeply for Sarah, seeing her as sort of a protégé. As such, when the two are free, they often work together on various projects.



* ''Fanfic/GirlAdventurer'': Sarah sees Sheila as this, and Sheila also cares deeply for Sarah, seeing her as sort of a protégé. As such, when the two are free, they often work together on various projects.
* ''Fanfic/TheBlackSheep'' by Creator/AAPessimal introduces Mariella Smith-Rhodes, who wants to grow up just like big sister Johanna. Mariella is evidently a ''sjaemboek'' cut from the same rhinoceros hide, as she has succeeded in being selected for education at the Assassins' Guild School against heavy competition.
** Much later in the cycle, Johanna's two younger daughters both have this relationship with their oldest sister Rebecka. Even the wild child of the three, [[{{Tykebomb}} Famke]], will shut up and do as she's told when Bekki gets ''insistent''. Ruth, the youngest of the three, adores her oldest sister and even schemes to fix her up with a boyfriend.
* In the ''WesternAnimation/RiseOfTheGuardians'' fic ''[[https://www.fanfiction.net/s/8751000/1/Guardian-of-Light Guardian of Light]]'', Jamie and Sophie have an adopted elder sibling, Helen, who is this to them both. It should be note-worthy that throughout the fandom, there are many stories in which Jamie and Sophie have an elder sister. Helen is the ''only'' one who actually cares about them, and doesn't abandon them the minute she meets Jack.

to:

* ''Fanfic/GirlAdventurer'': Sarah sees Sheila as this, and Sheila also cares deeply for Sarah, seeing her as sort of a protégé. As such, when the two are free, they often work together on various projects.
* ''Fanfic/TheBlackSheep'' by Creator/AAPessimal introduces Mariella Smith-Rhodes, who wants to grow up just like big sister Johanna. Mariella is evidently a ''sjaemboek'' cut from the same rhinoceros hide, as she has succeeded in being selected for education at the Assassins' Guild School against heavy competition.
** Much later in the cycle, Johanna's two younger daughters both have this relationship with their oldest sister Rebecka. Even the wild child of the three, [[{{Tykebomb}} Famke]], will shut up and do as she's told when Bekki gets ''insistent''. Ruth, the youngest of the three, adores her oldest sister and even schemes to fix her up with a boyfriend.
* In the ''WesternAnimation/RiseOfTheGuardians'' fic ''[[https://www.fanfiction.net/s/8751000/1/Guardian-of-Light Guardian of Light]]'', Jamie and Sophie have an adopted elder sibling, Helen, who is this to them both. It should be note-worthy that throughout the fandom, there are many stories in which Jamie and Sophie have an elder sister. Helen is the ''only'' one who actually cares about them, and doesn't abandon them the minute she meets Jack.



%%Administrivia/ZeroContextExample* In the ''Manga/MedakaBox'' fanfic ''Fanfic/WorldAsMyth'', Nabeshima to Zenkichi, and Yobuko to Onigase, at least when the former isn't being a YaoiFangirl.

to:

%%Administrivia/ZeroContextExample* In * ''Fanfic/HowFarDoTheseRootsGoDown'': Isabela, in spite of knowing that doing so would only lower Alma's already low opinion of her, shattered the ''Manga/MedakaBox'' fanfic ''Fanfic/WorldAsMyth'', Nabeshima to Zenkichi, vision of Mirabel without a second thought.
* In ''Fanfic/InfinityTrainBlossomingTrail'', Parker reveals that his sister Chloe is one of these because of how she makes amazing horror stories
and Yobuko all sorts of spooky shows. It's through her that Parker is more confident with his interests.
* In ''Fanfic/KarmaInRetrograde'', Touya was this
to Onigase, his younger siblings, shielding them from Endeavor's abuse at least when his own expense and always trying to put a smile on their faces through bad jokes and play. He's utterly horrified to discover that he becomes Dabi, a murderous villain who is willing to attack his youngest brother.
* ''Fanfic/TheKakashiWay'': Naruto swiftly comes to regard his newfound friend Indra in this fashion, unaware that he's actually a [[PeggySue time-displaced]] adult Sasuke. He starts addressing him as "Indra-nii"
the former isn't being a YaoiFangirl.day after they first meet, and openly admits to Sakura that he would address Iruka the same way if Iruka wasn't already "Iruka-sensei".



'''Hikari:''' Well, since you put it that way…
* ''Fanfic/FacingTheFutureSeries'': Once [[spoiler:Danielle]] joins the Fenton family, Danny and Jazz both grow into this role easily.

to:

'''Hikari:''' Well, since you put it that way…
way...
* ''Fanfic/FacingTheFutureSeries'': Once [[spoiler:Danielle]] joins Peta in ''Fanfic/PetaParker'' has a particularly close relationship with Morgan Stark, one of her jobs as a Stark Industries intern being to act as her babysitter.
* In ''Fanfic/PokemonResetBloodlines'', Pike Queen Lucy becomes this to [[spoiler:Brock's siblings, especially [[OfficialCouple after they start dating and become engaged]]]].
* Most ''Animation/{{Pucca}}'' fanfics tend to portray Pucca herself as being one to Garu's younger brother Gura, a popular UrbanLegendOfZelda character in
the Fenton family, Danny Pucca fandom. Those same fanfics also tend to have Garu himself be a Cool Big Bro (as well as PromotionToParent) to him as well.
%%Administrivia.ZeroContextExample* ''Fanfic/RacerAndTheGeek'' features Rainbow Dash playing this [[http://www.fimfiction.net/story/81159/racer-and-the-geek role to Scootaloo]].
* In ''WesternAnimation/DannyPhantom'' fanfic ''Fanfic/ResurrectedMemories'': Ember during her first life as Amberline [=McLain=] was this to her little sister Amy. This comes back to [[JustForPun haunt]] Amy quite literally when decades later [[spoiler:she, now going by the nickname A.J. becomes a long-term substitute at Casper High around the same time that a still 16 year old but now half-ghost Ember infiltrates the school under the [[SarcasmMode very clever]] name of [[RealNameAsAnAlias Amberline]] ''Lain'' who then ends up saving Amy's younger daughter Maggie
and Jazz both grow into befriending her older one Zoe all without Ember, Maggie or Zoe [[UnknownRelative ever suspecting their connection]].]]
* In ''Fanfic/RickAndMortyNewDramaAdventures'', Emma plays
this role easily. for Kitty.
* In addition to the canon examples, the ''WebAnimation/{{RWBY}}''/''Literature/TheHobbit''/''Literature/TheLordOfTheRings'' FusionFic ''[[https://www.fanfiction.net/s/11852303/1/Rise-of-a-Star-Knight Rise of a Star Knight]]'' and its sequel, ''[[https://www.fanfiction.net/s/12404778/1/Knights-of-Remnant-The-Ring-of-Darkness Knights of Remnant: The Ring of Darkness]]'', gives us Jaune's older sister, [[WebAnimation/RedVsBlue Carolina Arc]], who [[spoiler:gave him a copy of her transcript to sneak into Beacon]], taught him how to fight and how to use his [[SuperpowerfulGenetics Star Knight powers]] after the Fall of Vale, and is the [[FourStarBadass General]] of the [[BadassArmy Sky Knights of Vale]], which, as the Star Knight of Vale, is Jaune's personal army.



* The ''Fanfic/AftermathOfTheGames'' universe has a few examples:
** Human Cadence, like her Equestrian counterpart, is this for Sci-Twi, comforting her during her post-Friendship Games nightmares, and [[spoiler:spends a night guarding her with a baseball bat after Sci-Twi was nearly kidnapped by the Changelings]].
** In this story, the human versions of Rainbow Dash and Scootaloo are [[RelatedInTheAdaptation related to one another]], with the former regarding that as obvious.
** Princess Twilight becomes Sunset's Big Sister Best Friend Forever, after the latter [[spoiler:ascends to alicornhood and Celestia asks to be their ParentalSubstitute]].
** Sunset became this to Apple Bloom after being adopted into the Apple Family, tutoring her on her homework and even forgiving her for the Anon-A-Miss incident. WordOfGod says Sunset has this relationship with Sci-Twi, with the former helping the latter through her nightmares and providing her advice and moral support.
** Adagio, despite her flaws, deeply cares for both Aria and Sonata, [[spoiler:even willing to team up with the Rainbooms to rescue them from the Changelings]].
* Most ''Animation/{{Pucca}}'' fanfics tend to portray Pucca herself as being one to Garu's younger brother Gura, a popular UrbanLegendOfZelda character in the Pucca fandom. Those same fanfics also tend to have Garu himself be a Cool Big Bro (as well as PromotionToParent) to him as well.
* In ''Fanfic/PokemonResetBloodlines'', Pike Queen Lucy becomes this to [[spoiler: Brock's siblings, especially [[OfficialCouple after they start dating and become engaged]].]]
* In addition to the canon examples, the ''WebAnimation/{{RWBY}}''/''Literature/TheHobbit''/''Literature/TheLordOfTheRings'' FusionFic ''[[https://www.fanfiction.net/s/11852303/1/Rise-of-a-Star-Knight Rise of a Star Knight]]'' and its sequel, ''[[https://www.fanfiction.net/s/12404778/1/Knights-of-Remnant-The-Ring-of-Darkness Knights of Remnant: The Ring of Darkness]]'', gives us Jaune's older sister, [[WebAnimation/RedVsBlue Carolina Arc]], who [[spoiler:gave him a copy of her transcript to sneak into Beacon]], taught him how to fight and how to use his [[SuperpowerfulGenetics Star Knight powers]] after the Fall of Vale, and is the [[FourStarBadass General]] of the [[BadassArmy Sky Knights of Vale]], which, as the Star Knight of Vale, is Jaune's personal army.
* ''Fanfic/ConstantsAndVariables'': Elizabeth acts as this to Harry. She sees the appalling situation with the Dursleys and immediately takes it upon herself to take him in (despite having no employment, money or living situation to speak of at the time). She helps him learn how to use his tear powers, sticks up for him when Snape gives him a hard time, takes him on field trips and vacations throughout the multiverse and helps him with his schemes when he suspects that the school is in danger in any way.
* In ''Fanfic/RickAndMortyNewDramaAdventures'', Emma plays this role for Kitty.

to:

* The ''Fanfic/AftermathOfTheGames'' universe has a few examples:
** Human Cadence, like her Equestrian counterpart,
%%Administrivia.ZeroContextExample* ''Fanfic/RubyAndNora'': Yang is still this, and Winter plays this for Sci-Twi, comforting her during her post-Friendship Games nightmares, and [[spoiler:spends a night guarding her with a baseball bat after Sci-Twi was nearly kidnapped by the Changelings]].
**
trope much more straight due to AdaptationalNiceGuy.
*
In ''Fanfic/SafeAnchorage'', Asha Greyjoy takes on this story, the human versions of Rainbow Dash and Scootaloo are [[RelatedInTheAdaptation related to one another]], with the former regarding that as obvious.
** Princess Twilight becomes Sunset's Big Sister Best Friend Forever, after the latter [[spoiler:ascends to alicornhood and Celestia asks to be their ParentalSubstitute]].
** Sunset became this to Apple Bloom after being adopted into the Apple Family, tutoring her on her homework and even forgiving her for the Anon-A-Miss incident. WordOfGod says Sunset has this relationship with Sci-Twi, with the former helping the latter through her nightmares and providing her advice and moral support.
** Adagio, despite her flaws, deeply cares for
role both Aria and Sonata, [[spoiler:even willing to team up with the Rainbooms to rescue them from the Changelings]].
* Most ''Animation/{{Pucca}}'' fanfics tend to portray Pucca herself as being one to Garu's
for her actual younger brother Gura, a popular UrbanLegendOfZelda character in the Pucca fandom. Those same fanfics Theon, and for Jeyne Poole, who has no family remaining. She's brusque and straightforwards, but also tend to have Garu himself be a Cool Big Bro (as well as PromotionToParent) to him as well.
* In ''Fanfic/PokemonResetBloodlines'', Pike Queen Lucy becomes this to [[spoiler: Brock's siblings, especially [[OfficialCouple after they start dating
caring and become engaged]].]]
protective towards both of them.
* In addition to the canon examples, the ''WebAnimation/{{RWBY}}''/''Literature/TheHobbit''/''Literature/TheLordOfTheRings'' FusionFic With Naofumi being 10-years-old in ''[[https://www.fanfiction.net/s/11852303/1/Rise-of-a-Star-Knight Rise of a Star Knight]]'' net/s/13541061/1/Shield-Kid-s-Bizarre-Adventure Shield Kid's Bizarre Adventure]]'', Motoyasu and its sequel, ''[[https://www.fanfiction.net/s/12404778/1/Knights-of-Remnant-The-Ring-of-Darkness Knights of Remnant: The Ring of Darkness]]'', gives us Jaune's older sister, [[WebAnimation/RedVsBlue Carolina Arc]], who [[spoiler:gave him a copy of her transcript to sneak into Beacon]], taught him how to fight and how to use his [[SuperpowerfulGenetics Star Knight powers]] after the Fall of Vale, and is the [[FourStarBadass General]] of the [[BadassArmy Sky Knights of Vale]], which, as the Star Knight of Vale, is Jaune's personal army.
* ''Fanfic/ConstantsAndVariables'': Elizabeth acts as
Ren play this to Harry. She sees the appalling situation with the Dursleys and immediately takes it upon herself to take him in (despite having no employment, money or living situation to speak of at the time). She helps him learn how to use his tear powers, sticks up for him when Snape gives him a hard time, takes him on field trips and vacations throughout the multiverse and helps him with his schemes when he suspects that the school is in danger in any way.
* In ''Fanfic/RickAndMortyNewDramaAdventures'', Emma
role. But while Motoyasu plays this role for Kitty.the trope straight with ease, it's deconstructed with Ren, who struggles to maintain his cool persona to keep the image Naofumi has of him.



* In ''Fanfic/KarmaInRetrograde'', Touya was this to his younger siblings, shielding them from Endeavor's abuse at his own expense and always trying to put a smile on their faces through bad jokes and play. He's utterly horrified to discover that he becomes Dabi, a murderous villain who is willing to attack his youngest brother.
* In ''Fanfic/FracturedFates'', Kaneki acts as this towards the [[TokenMiniMoe short]] and [[ShrinkingViolet timid]] Asuna. She also acted as this towards her actual younger sister, Yuna, [[spoiler:prior to her death.]]
* In ''WesternAnimation/DannyPhantom'' fanfic ''Fanfic/ResurrectedMemories'': Ember during her first life as Amberline [=McLain=] was this to her little sister Amy, this comes back to [[JustForPun haunt]] Amy quite literally when decades later [[spoiler: she, now going by the nickname A.J. becomes a long-term substitute at Casper High around the same time that a still 16 year old but now half-ghost Ember infiltrates the school under the [[SarcasmMode very clever]] name of [[RealNameAsAnAlias Amberline]] ''Lain'' who then ends up saving Amy's younger daughter Maggie and befriending her older one Zoe all without Ember, Maggie or Zoe [[UnknownRelative ever suspecting their connection]].]]



* ''Fanfic/TotalDramaAllStarsRewrite'': Cameron says that he sees Zoey and Gwen as these to him. Zoey also sees Gwen as one.
* In ''Fanfic/EvaSessionsSomeplaceVastAndDry'', Misato is a straightforward example, as she is literally Shinji's and Rei's adopted older sister without the ParentalSubstitute and MrsRobinson subtexts of her canon counterpart; Asuka also fondly remembers her as her babysitter.
* Karai becomes something like this to Mikey in ''Fanfic/TheChroniclesOfKaraiGettingHerShitTogether'', often humoring his weirder habits and claims (coming find that [[ObfuscatingStupidity he is more aware of his surroundings that he seems]]) and even offers to beat up Raphael for him when he feels like he can't handle it.
* ''Fanfic/BecomingMoreThanWhatIAm'':
** The ArchangelGabriel is this to Max, having been the one to give her her sword and offering her advice when she needed it.
** Gender-Inverted. While Lucifer is annoyed that Max didn't take his side during the rebellion and Max felt that Lucifer was a traitor, otherwise Lucifer gets along with her more than their other siblings.
* In ''Fanfic/SafeAnchorage'', Asha Greyjoy takes on this role both for her actual younger brother Theon, and for Jeyne Poole, who has no family remaining. She's brusque and straightforwards, but also caring and protective towards both of them.

to:

* ''[[https://archiveofourown.org/works/44178163/chapters/111090244 Stone Streak]]'': [[AgeLift 25-years-old]] model Juleka was this for 13-years-old Adrien, being one of the few real friends he has both in and out of work. After his father's death, Juleka learns through Gift that Adrien saw her more as a mix between an HonoraryAunt and a ParentalSubstitute, and she and her wife Marinette [[AdoptivePeerParent would soon take him in as their son]].
* ''Fanfic/TradingGame'': The main protagonist Yuuna serves as this for Mei and many of the orphans in the [[Anime/YuGiOhArcV Fusion Dimension]]. [[spoiler:She later becomes this for Serena and Yuri when attending Duel Academia.]]
* ''Fanfic/TotalDramaAllStarsRewrite'': Cameron says that he sees Zoey and Gwen as these to him. Zoey also sees Gwen as one. \n* In ''Fanfic/EvaSessionsSomeplaceVastAndDry'', Misato is a straightforward example, as she is literally Shinji's and Rei's adopted older sister without the ParentalSubstitute and MrsRobinson subtexts of her canon counterpart; Asuka also fondly remembers her as her babysitter.\n* Karai becomes something like this to Mikey in ''Fanfic/TheChroniclesOfKaraiGettingHerShitTogether'', often humoring his weirder habits and claims (coming find that [[ObfuscatingStupidity he is more aware of his surroundings that he seems]]) and even offers to beat up Raphael for him when he feels like he can't handle it.\n* ''Fanfic/BecomingMoreThanWhatIAm'':\n** The ArchangelGabriel is this to Max, having been the one to give her her sword and offering her advice when she needed it.\n** Gender-Inverted. While Lucifer is annoyed that Max didn't take his side during the rebellion and Max felt that Lucifer was a traitor, otherwise Lucifer gets along with her more than their other siblings.\n* In ''Fanfic/SafeAnchorage'', Asha Greyjoy takes on this role both for her actual younger brother Theon, and for Jeyne Poole, who has no family remaining. She's brusque and straightforwards, but also caring and protective towards both of them.



* Peta in ''Fanfic/PetaParker'' has a particularly close relationship with Morgan Stark, one of her jobs as a Stark Industries intern being to act as her babysitter.
* With Naofumi being 10-years-old in ''[[https://www.fanfiction.net/s/13541061/1/Shield-Kid-s-Bizarre-Adventure Shield Kid's Bizarre Adventure]]'', Motoyasu and Ren play this role. But while Motoyasu plays the trope straight with ease, it's deconstructed with Ren, who struggles to maintain his cool persona to keep the image Naofumi has of him.
* In ''Fanfic/InfinityTrainBlossomingTrail'', Parker reveals that his sister Chloe is one of these because of how she makes amazing horror stories and all sorts of spooky shows. It's through her that Parker is more confident with his interests.
* Rachel in ''Fanfic/CardcaptorRad'', as despite being Rad's cousin, acts more like an older sister to him and his friends given she's extremely protective of them. Hot Shot also has been slowly evolving from his OneOfTheKids mentality to something of an older brother figure to the kids.
* ''Fanfic/TradingGame'': The main protagonist Yuuna serves as this for Mei and many of the orphans in the [[Anime/YuGiOhArcV Fusion Dimension]]. [[spoiler: She later becomes this for Serena and Yuri when attending Duel Academia.]]
* ''Fanfic/HowFarDoTheseRootsGoDown'': Isabela, in spite of knowing that doing so would only lower Alma's already low opinion of her, shattered the vision of Mirabel without a second thought.
* ''[[https://archiveofourown.org/works/44178163/chapters/111090244 Stone Streak]]'': [[AgeLift 25-years-old]] model Juleka was this for 13-years-old Adrien, being one of the few real friends he has both in and out of work. After his father's death, Juleka learns through Gift that Adrien saw her more as a mix between an HonoraryAunt and a ParentalSubstitute, and she and her wife Marinette [[AdoptivePeerParent would soon take him in as their son]].

to:

* Peta in ''Fanfic/PetaParker'' has a particularly close relationship with Morgan Stark, one of her jobs as a Stark Industries intern %%Administrivia/ZeroContextExample* In the ''Manga/MedakaBox'' fanfic ''Fanfic/WorldAsMyth'', Nabeshima to Zenkichi, and Yobuko to Onigase, at least when the former isn't being to act as her babysitter.
* With Naofumi being 10-years-old in ''[[https://www.fanfiction.net/s/13541061/1/Shield-Kid-s-Bizarre-Adventure Shield Kid's Bizarre Adventure]]'', Motoyasu and Ren play this role. But while Motoyasu plays the trope straight with ease, it's deconstructed with Ren, who struggles to maintain his cool persona to keep the image Naofumi has of him.
* In ''Fanfic/InfinityTrainBlossomingTrail'', Parker reveals that his sister Chloe is one of these because of how she makes amazing horror stories and all sorts of spooky shows. It's through her that Parker is more confident with his interests.
* Rachel in ''Fanfic/CardcaptorRad'', as despite being Rad's cousin, acts more like an older sister to him and his friends given she's extremely protective of them. Hot Shot also has been slowly evolving from his OneOfTheKids mentality to something of an older brother figure to the kids.
* ''Fanfic/TradingGame'': The main protagonist Yuuna serves as this for Mei and many of the orphans in the [[Anime/YuGiOhArcV Fusion Dimension]]. [[spoiler: She later becomes this for Serena and Yuri when attending Duel Academia.]]
* ''Fanfic/HowFarDoTheseRootsGoDown'': Isabela, in spite of knowing that doing so would only lower Alma's already low opinion of her, shattered the vision of Mirabel without
a second thought.
* ''[[https://archiveofourown.org/works/44178163/chapters/111090244 Stone Streak]]'': [[AgeLift 25-years-old]] model Juleka was this for 13-years-old Adrien, being one of the few real friends he has both in and out of work. After his father's death, Juleka learns through Gift that Adrien saw her more as a mix between an HonoraryAunt and a ParentalSubstitute, and she and her wife Marinette [[AdoptivePeerParent would soon take him in as their son]].
YaoiFangirl.
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* ''Fanfic/MikePines'': Mike loves to make Dipper and Mabel happy and, between him being a zombie [[spoiler:and later, a cyborg]] who is always around to lend them a hand, Dipper and Mabel certainly think he's awesome.
Is there an issue? Send a MessageReason:
Per this thread, Boobs Of Steel is no longer a trope.


* Physically older? Check. More mature than everyone else, protagonist included? Check. An actual leader for TheSquad? Check. [[BoobsOfSteel Huge tracts of land]]? Check. Meet Forte Stollen from ''VideoGame/GalaxyAngel''.

to:

* Physically older? Check. More mature than everyone else, protagonist included? Check. An actual leader for TheSquad? Check. [[BoobsOfSteel Huge tracts "tracts of land]]? land"? Check. Meet Forte Stollen from ''VideoGame/GalaxyAngel''.
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* ''Fanfic/GirlAdventurer'': Sarah sees Sheila as this, and Sheila also cares deeply for Sarah, seeing her as sort of a protégé. As such, when the two are free, they often work together on various projects.
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* In the fic ''Fanfic/MeetingALoud'', Luna and the older Loud daughters all do their best to be there for their new foster brother after he moves in, especially when they learn just how much trauma the poor kid's been through.
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Has Two Mommies was disambiguated in TRS + ZCE


* ''Series/BuffyTheVampireSlayer'':
** Buffy originally filled this role for Dawn. However, after dying, coming back and basically abandoning her, it stopped applying for a bit. It was repaired in Season 7.
** Tara and Willow are somewhere between Cool Big Sis and HasTwoMommies towards Dawn.
** Faith, the AxCrazy man raping ShadowArchetype, became this when TheBusCameBack in season seven, primarily because she was took the potentials out to let off steam and was seen as more reasonable than Buffy.

to:

* %%* ''Series/BuffyTheVampireSlayer'':
** %%** Buffy originally filled this role for Dawn. However, after dying, coming back and basically abandoning her, it stopped applying for a bit. It was repaired in Season 7.
** %%** Tara and Willow are somewhere between Cool Big Sis and HasTwoMommies has two moms towards Dawn.
** %%** Faith, the AxCrazy man raping ShadowArchetype, became this when TheBusCameBack in season seven, primarily because she was took the potentials out to let off steam and was seen as more reasonable than Buffy.
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* ''Series/StarTrekVoyager'': [[TagalongKid Naomi Wildman]] sees Seven of Nine this way, which helps Seven in rediscovering her humanity after being liberated from the Borg.
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* ''ComicBook/GenderQueerAMemoir'': Maia's younger sister Phoebe, whom e gushes about, is a very hip, accepting person (and illustrated this book).

to:

* ''ComicBook/GenderQueerAMemoir'': Maia's younger sister Phoebe, whom e she gushes about, is a very hip, accepting person (and illustrated this book).



* ''Fanfic/TheReactsverse'' has a few examples:
** ''Fanfic/WeissReacts'': Yang and Winter, as in canon, although Winter is far more of a TeamMom than her canonical counterpart.
** ''Fanfic/LucinaReacts'': Reflet and Cordelia are this to Robin, though Reflet is more mischievous.
** ''Fanfic/CorrinReacts'': Scarlet is this, as in canon, and Azura is viewed as this by Elise.

to:

* %%Administrivia.ZeriContextExample* ''Fanfic/TheReactsverse'' has a few examples:
** %%Administrivia.ZeroContextExample** ''Fanfic/WeissReacts'': Yang and Winter, as in canon, although Winter is far more of a TeamMom than her canonical counterpart.
** %%Administrivia.ZeroContextExample** ''Fanfic/LucinaReacts'': Reflet and Cordelia are this to Robin, though Reflet is more mischievous.
** %%Administrivia.ZeroContextExample** ''Fanfic/CorrinReacts'': Scarlet is this, as in canon, and Azura is viewed as this by Elise.
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* Penny on the ''Series/TheBigBangTheory'' to pretty much everyone, but especially her self declared "bestie" Amy.

to:

* Penny on the ''Series/TheBigBangTheory'' to pretty much everyone, but especially her self declared "bestie" Amy.
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Whip It Good is no longer a trope.


* ''Fanfic/TheBlackSheep'' by Creator/AAPessimal introduces Mariella Smith-Rhodes, who wants to grow up just like big sister Johanna. Mariella is evidently a ''[[WhipItGood sjaemboek]]'' cut from the same rhinoceros hide, as she has succeeded in being selected for education at the Assassins' Guild School against heavy competition.

to:

* ''Fanfic/TheBlackSheep'' by Creator/AAPessimal introduces Mariella Smith-Rhodes, who wants to grow up just like big sister Johanna. Mariella is evidently a ''[[WhipItGood sjaemboek]]'' ''sjaemboek'' cut from the same rhinoceros hide, as she has succeeded in being selected for education at the Assassins' Guild School against heavy competition.



* In ''Fanfic/NeonGenesisEvangelionGenocide'', Hikari says Asuka is like her bigger sister when she's trying to talk her friend into staying with her.

to:

* In ''Fanfic/NeonGenesisEvangelionGenocide'', ''Fanfic/NeonGenesisEvangelionGenocide'': Hikari says Asuka is like her bigger sister when she's trying to talk her friend into staying with her.
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* In the ''Manga/MedakaBox'' fanfic ''Fanfic/WorldAsMyth'', Nabeshima to Zenkichi, and Yobuko to Onigase, at least when the former isn't being a YaoiFangirl.

to:

* %%Administrivia/ZeroContextExample* In the ''Manga/MedakaBox'' fanfic ''Fanfic/WorldAsMyth'', Nabeshima to Zenkichi, and Yobuko to Onigase, at least when the former isn't being a YaoiFangirl.
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* In ''WesternAnimation/TheIncredibles'', Violet becomes this for Dash and Jack-Jack once she gets over her personal issues.

to:

* In ''WesternAnimation/TheIncredibles'', ''WesternAnimation/TheIncredibles1'', Violet becomes this for Dash and Jack-Jack once she gets over her personal issues.
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* In ''LightNovel/IveBeenKillingSlimesFor300YearsAndMaxedOutMyLevel'', Azusa refers to Beelzebub as this, when thinking about what traditional family roles members of her FamilyOfChoice fit into. This is because Beelzebub is the oldest in the family group and whenever Azusa and the others need help Beelzebub is the one they turn to. It's to the point that when [[MaouTheDemonKing Pecora]] suggests Azusa to be this to her, Azusa muses that Beelzebub would have been a better choice for that role than she is, something Pecora agrees with and is miffed that Beelzebub refuses to comply with the idea of acting domineering towards her king, forcing Pecora to look elsewhere.

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* In ''LightNovel/IveBeenKillingSlimesFor300YearsAndMaxedOutMyLevel'', ''Literature/IveBeenKillingSlimesFor300YearsAndMaxedOutMyLevel'', Azusa refers to Beelzebub as this, when thinking about what traditional family roles members of her FamilyOfChoice fit into. This is because Beelzebub is the oldest in the family group and whenever Azusa and the others need help Beelzebub is the one they turn to. It's to the point that when [[MaouTheDemonKing Pecora]] suggests Azusa to be this to her, Azusa muses that Beelzebub would have been a better choice for that role than she is, something Pecora agrees with and is miffed that Beelzebub refuses to comply with the idea of acting domineering towards her king, forcing Pecora to look elsewhere.
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* ''ComicBook/GenderQueerAMemoir'': Maia's older sister Phoebe, whom e gushes about, is a very hip, accepting person (and illustrated this book).

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* ''ComicBook/GenderQueerAMemoir'': Maia's older younger sister Phoebe, whom e gushes about, is a very hip, accepting person (and illustrated this book).

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