History BigBrotherInstinct / AnimeAndManga

** One of Ichigo's biggest irritations is an older brother harming his younger sister. He gave us the page quote. In the Hell verse movie, when Yuzu dies, Ichigo flips completely until Renji stops him. In the Hueco Mundo arc, Ichigo comes across [[PluckyGirl Nel]], and his constant protection of her eventually leads to her trying to protect him back. When an ArcVillain messes with his little sisters, Ichigo eventually contemplates murder to save them.

* Natsuki from ''Anime/Tsuritama'' over his little sister Sakura, to the degree that she's one of the very few things that can crack through his grumpy demeanor and get him to smile. Haru saying to Sakura that Natsuki'll be teaching him and Yuki how to fish is the only reason Natsuki agrees to do it, just to keep her from feeling let down.
* ''Music/Vocaloid''-- although technically all the canon Vocaloids are supposed to be siblings -- has Len Kagamine, who in vids is protective or over-protective of his sister, Rin, although Rin is supposed to be the older one.

** During the filming of their [[SoBadItsGood amateur, plotless movie]], Haruhi gets Mikuru to drink alcohol, trying to get a certain effect out of her. He almost punches Haruhi in the face.

* ''Manga/FullmetalAlchemist'': The main plot revolves around Ed scouring the earth for a way to restore his younger brother Al's body to normal. On the other hand, considering Al is inhabiting an animated suit of armor much larger than Ed, there's a quite unusual dynamic going on there. Especially considering how Ed reacts to [[BerserkButton anyone calling him short]].
** Ed sacrificed his arm to keep his brother's soul in existence. [[spoiler:And later, his use of alchemy altogether.]] If that's not Big Brother Instinct, what is?

** Scar's older brother. [[spoiler: When Kimblee attacked, he jumped in front of Scar even though the effort was... well, fruitless. Afterwards, as Scar lay dying with one arm gone, his brother sacrifices his own arm and bleeds to death in his place.]]

* ''Anime/DarkerThanBlack'': There is a ''reason'' Hei goes [[BerserkButton completely nuts]] when his [[strike:Dead]] missing sister is brought up. [[spoiler:Namely, the reason he came to be a BadAss martial artist in the first place was to protect his Contractor sister. That's right, the normal sibling wanted to protect the one with superpowers. [[BadassNormal And did a pretty good job]] up until [[RealityIsOutToLunch Heaven's Gate]] somehow fused them.]] In the second season, [[spoiler:he starts treating Suou as a substitute little sister.]]

*** [[BoisterousBruiser Denmark]] acts this way as well, loudly referring to himself as the older brother of all the Nordics. His being especially attentive toward Iceland annoys Norway.

*** Denmark acts this way as well, loudly referring to himself as the older brother of all the Nordics. His being especially attentive toward Iceland annoys Norway.

** England also acted as an older brother figure to America, in his own way. The Revolutionary War thus broke his heart, and he still seems to have a soft spot for him ([[{{Tsundere}} not that he'd ever show it]]).

* In ''Franchise/MagicalGirlLyricalNanoha'':

** Ginga also demonstrated this in a flashback to airport fire. Rather than wait to be found, she went deeper into the burning building looking for Subaru (an act that would have gotten her killed if Fate hadn't rescued her).

** Kinkaku seems to have this. He and his brother, Ginkaku, are infamous among Kumogakure. They fight as a team, and work well together. One another's name being their most used words. When Ginkaku is backed into a corner, he calls for his brother to help him. But he doesn't make it. In response to his brother's defeat, Kinkaku goes into rage [[spoiler: and enters six-tailed bijuu mode and rampages through the first division of the shinobi alliance.]] His first words [[spoiler: after transforming]] is "How dare you do that to Ginkaku." Darui apologizes to Kinkaku, but the latter just says it's too late, and attacks anyhow. The two brothers, if not half-siblings are fraternal twins. Their ages are the same, but birthdays are one month apart, with Kinkaku's being in March, and Ginkaku in April. it's accepted by fandom that Kinkaku is the older brother. He is bigger, ad also seems to be smarter. And Ginkaku, given his calling on Kinkaku for help, seems to show certain reliance on his brother. And Kinkaku, given his reaction looks out for his brother and can't stand for him to be harmed. Kakuzu even stating he hasn't seen Kinkaku that pissed in a while, and concludes it must mean Ginkaku has been defeated.

* ''/Manga/PeacemakerKurogane'': Tatsunosuke is overly protective of his younger brother Tetsunosuke. The other characters tease them both about this.

** A much straighter example would be Tsubasa and Souma in ''KannazukiNoMiko'': the entire conflict between them stems from Tsubasa's desire to protect Souma as effectively as possible, which unfortunately involves pulling him to TheDarkSide and killing his love interest. [[spoiler:Towards the end, however, Tsubasa recognizes that Souma has wishes, too, and helps him to reach ''his'' goals.]] Also, Tsubasa killed their father who beaten up Souma when were very young, which is why they were separated.

** During the filming of their [[SoBadItsGood amateur, plotless movie]], Haruhi gets Mikuru to drink alcohol, trying to get a certain effect out of her. He almost attacks Haruhi. Let us repeat. He almost attacks a reality-warping goddess.

** Ginga also demonstrated this in a flashback to airport fire. Rather than wait to be found, she went deeper into the burning building looking for Subaru (an act would have gotten her killed if Fate hadn't rescued her).

* In ''Anime/PersonaTrinitySoul'', Ryou used to be like this 10 years ago. After their family reunited he turned out to be [[spoiler:AloofBigBrother]]. His younger brother Shin also have this toward their youngest brother Jun. Shin is really worried about Jun, he really worried when Jun came back home 30 minutes late than usual, including [[spoiler:[[DatePeepers peeking]] him on his date]]. But it turns out [[spoiler:that it was not really a date]].

* In ''Franchise/MagicalGirlLyricalNanoha'', Cinque of the Numbers is quite protective of her younger sisters, staying behind to fight Subaru (who is in the middle of a terrifying berserker rage brought on by the Numbers hurting her own sister Ginga) and getting badly injured in the process to allow Nove and Wendi to escape. Even though her crimes are more severe than the other Numbers and she does not expect to ever be completely free, she decides to atone for them and cooperate with the investigation so she can help her younger sisters.