[[http://ks.renai.us/viewtopic.php?f=52&t=6750 Sisterhood (Hanako Epilogue)]] is a ContinuationFic that picks up around the time where Hanako's good ending in KatawaShoujo left off and ends around the time Lilly's story arc would end in the VN. The story starts with Lilly still in Scotland, having just heard her parents' request to join them there and Hisao and Hanako adjusting to the changes their relationship has brought into their lives. Hanako, her confidence boosted a little bit by her success in winning Hisao's heart, is determined to strengthen her friendship with Lilly and get on more equal footing with her, but the situation is complicated when Lilly announces her parents want her to leave Japan and migrate to Scotland.

A notable aspect of the fanfic is that it switches perspective several times over the course of the story. While the story itself centers around Hanako, only some of the chapters are told from her perspective. Others are told through Hisao's eyes and a handful are from Lilly's point of view. Upon its release, the fanfic was praised as feeling like a natural extension to Hanako's route in the game.

!This fic includes examples of:
* ADateWithRosiePalms: When Hisao tries to take an increasingly passionate make-out session with Hanako to the next level, Hanako admits she's not ready for intercourse yet. Hisao appears to take it well, but Hanako worries he'll sneak off while she's asleep to 'give himself that happy ending I couldn't give him'. She solves the problem by [[spoiler:taking the matter into her own hands...literally.]]
* ArmorPiercingQuestion: Miss Yumi carpetbombs Hisao with these at one point.
-->'Did you really believe that a few months of dating you was all it would take for Miss Ikezawa’s trauma to disappear just like that? Or a few months of dating anybody for that matter? Were you counting on that when you started going out with her? Do you even know why I’m treating her?'
** It's a not-so-gentle reminder to Hisao that Hanako needs both friendship and truly professional help if she's to recover.
* BigNo: Hanako lets one out when [[spoiler: Hisao gets into a collision and she realizes he's having a heart attack right in front of her.]]
* BreakoutCharacter: Miss Yumi in a way. While the VN already established the fact that Hanako was seeing a therapist, Sisterhood was the first fanfic where Hanako's therapist was given a developed personality and as a result has made an appearance in other people's Hanako-related fanfiction as well.
* ButNowIMustGo: Played straight and then deconstructed. Hanako's therapist mentions they'll be going their separate ways the moment Hanako no longer needs psychiatric help and that's why a friendship between them wouldn't work. Hanako starts suspecting Lilly to have this mindset as well as she realizes her new-found confidence seems to be driving Lilly towards the decision to leave Japan, rather than away from it. She does NOT like it.
* CharacterDevelopment: All three protagonists go through some character development, Hanako most of all. Her character development ends up becoming a central point in the conflict between herself and Lilly.
** Allows Lily to experience some parts of her [[spoiler: Good End]] in canon, without her having a relationship with Hisao.
* ClubStub: Like in Emi's route, Hisao starts a science club and in the beginning it's just him and Mutou. Eventually, Hisao gets Kenji on board and Hanako intends to try and help expand the club in her own way. Hisao later admits he'd like the club to be bigger.
* CrazyPrepared: After Hisao's stay in the hospital, Hisao and Hanako walk down the road to town for the second time in a week. This time, Hanako brings along an umbrella, just in case.
* CryIntoChest: Lilly breaks down while visiting Hisao in the hospital, though for different reasons than in her own route.
* {{Deconstruction}}: Part of the story was inspired by a fan discussion that predicted that Lilly would probably move to Scotland after Hanako's arc since Hanako now has someone else to rely on. Sisterhood deconstructs the implications of that prediction.
* EarnYourHappyEnding: Hanako's, Hisao's and Lilly's 'little crippled family' gets violently shattered by events in the second half of the story. But they eventually come out of it much closer than before and it's completely due to each of them making a sincere effort to fix the situation.
* EnemyMine: While Hisao, Hanako and Lilly are going through a rough patch, Shizune decides to put her feud with Lilly on hold in order to be there for her classmates. But when the situation is resolved, she immediately picks a fight with Lilly again. Lilly, however, makes use of the experience to create some lasting progress with her cousin.
* FigureItOutYourself: When Hisao asks Miss Yumi for tips on how to reach out to Hanako, Yumi merely points out that relationship therapy isn't her field and Hisao himself has more experience at winning Hanako over than she does.
* FirstNameBasis: Miss Yumi usually addresses people by their surnames, but uses a slightly more intimate "Miss Hanako" when speaking to Hanako directly. (And Hanako calls her Miss Yumi instead of Miss Takawa) She still insists on the "Miss"-part with Hanako in order to keep their professional distance intact. The one time she addresses Hanako in an informal manner is during an apology in order to indicate she's apologizing as a person and not as a therapist.
* {{Foreshadowing}}: Miss Yumi's speech about the difference between friends and therapists in the flashback chapter.
* FriendlyTickleTorture: When Hanako glumly admits she cannot feel any sensations in the parts of her body that are burned, Hisao assures her that she still has plenty of sensitive areas left and then drives home the point by tickling her into submission.
* FunnyBackgroundEvent: After a nightly walk, Hisao and Hanako return to the Satou summer home and when they reach the patio, Hanako nearly trips over Lilly who was sitting outside and was casually reading her book in the dark.
* GetOut: Happens off-screen between [[spoiler: Hanako and Lilly.]]
* GenkiGirl: Naomi, Hanako's neighbour in class and fellow newspaper club member, acts a bit hyperactive at times and is easily distracted.
* HappyEndingMassage: Hisao regularly gives Hanako massages/backrubs to help her relax whenever she feels tense. Hanako notes a few of these massages devolved into something more. After their date to the arcade center, Hisao and Hanako take this one UpToEleven.
* HeroicBSOD: [[spoiler:When Hisao gets into an accident in front of Hanako, she so paralyzed by fear she can't even call for help. Her guilt about this sends her into a severe relapse and her actions drag Hisao and Lilly into a heroic BSOD of their own.]]
* InstantFanclub: During a conversation about Lilly's popularity in school, Hanako notes to herself that [[LeaningOnTheFourthWall Lilly would probably have one of these if their life took place inside a visual novel or anime]].
* [[spoiler: ItsNotYouItsMe: This is pretty much the logic behind Hanako's decision to end her relationship with Hisao. She doesn't actually use the line, but she pretty much breaks up with Hisao without giving him the reason. Justified in that Hanako felt too ashamed of her inability to help Hisao in his moment of need to talk to him about it.]]
* IWantMyBelovedToBeHappy: A subtle variation. Lilly admits to Hanako that her friendship with Hisao could have lead to romantic feelings given the time and under the right circumstances, but since she cannot see, falling in love is a gradual process to her. (no love at first sight for her) When she realized Hisao was more drawn to Hanako, Lilly preemptively friendzoned Hisao in order to give Hanako a chance. Lilly also mentions to Hisao that this is probably what Hanako would do if she thought the shoe was on the other foot. (even if she was mistaken)
* LameExcuse: Hanako got Lilly to give her anticonception pills under the excuse of menstruation pains. She admits the excuse was blatantly transparent and is thankful to Lilly for being a good sport and playing along without asking any awkward questions.
* [[LikeBrotherAndSister Like Sister And Sister]]: The title refers to Hanako's and Lilly's developing relationship. Hanako and Hisao feel like they and Lilly form a small family and Lilly is like a sister. Near the end Lilly acknowledges openly that Hanako is like a sister to her as well.
* LoveHotels: After their date, Hisao offers to spend the night in the city and they end up staying at a hotel. The story doesn't specify whether they stay at an actual love hotel or not, though their motivations for not returning to Yamaku for the night are pretty clear.
* MarshmallowHell: While in the process of getting ready for a [[FetishFuel full-body massage involving slippery lotion]], Hisao tells Hanako (who's lying on top of him) to push herself up his body until their eyes are at the same level. But Hanako ends up overshooting the mark, accidentally giving Hisao a case of this. His reply: [[MyEyesAreUpHere My eyes are down here.]]
* MistakenForGay: During some girly gossipping, Hanako mentions to Lilly that Hisao invited Kenji to join the newly-formed science club and [[HeManWomanHater Kenji]], upon hearing that no females were attending, enthusiastically accepted. This causes Lilly and Hanako to conclude that Kenji's homosexual.
* NiceJobBreakingItHero: Pressed for time, Lilly makes a desperate attempt to reach out to Hanako after the latter [[spoiler: breaks up with Hisao out of guilt]]. It blows up in her face and she actually makes the situation worse. Lilly later has to acknowledge that [[spoiler: Hisao and Hanako didn't need her help to reconcile with each other after all]].
* NoodleIncident: Near the end of the story, Hisao asks Lilly, Shizune and Misha to give his parents a tour of the school and keep them busy while he searches for Hanako. Lilly and Shizune take the opportunity to pry several embarrassing childhood stories out of Hisao's mom and Misha taunts Hisao about it over the phone later. Since that part is told from Hanako's perspective, she doesn't hear what exactly Misha found out.
* NotAMorningPerson: It was already established in KatawaShoujo that this trope applies to Lilly. One of the chapters that's told from her perspective starts early in the morning. Her thoughts are...a little less than coherant.
* OhCrap: Played for laughs at first when Hisao and Hanako discuss the traces of their last love making session in the tea room. Hisao has love scratches on his back and Hanako has a hickey. Their awkwardness quickly turns to horror when they discover Lilly was just outside the room and has heard the whole thing. A much more serious example is when Hisao opens the envelope Shizune found in the student council mailbox and finds [[spoiler: the hair clip he gave Hanako. Her sending it back means their relationship really is on the rocks.]] There's another semi-serious one when Hisao's parents pick him up from the hospital and tell him they intend to take him home for a few days to recover there.
* OriginalCharacter: The story introduces Miss Yumi, Hanako's therapist. She's a supporting character, but still rather important to the plot.
** Hanako does have a therapist in canon, but the characteristics of the canon therapist are never revealed.
* OriginalFlavor: Most people who read it agree it very much feels like a natural extension of Hanako's in-game story arc.
* PeekABangs: Hanako still has hers in order to hide her facial scarring, but she occasionally uses a hair clip Hisao gave her to move them aside in order to make kissing more practical or simply as a sign of her increased comfort around Hisao.
* RelationshipReveal: While waiting for Lilly to arrive at Yamaku after her first trip to Scotland, Hisao is wondering about ways to play this trope straight. He's a bit disappointed when he finds out that Lilly already got Hanako to spill the beans on their RelationshipUpgrade.
* RousingSpeech: Hisao prepared one for [[spoiler: his reconciliation attempt with Hanako.]] It's interrupted mid-way by Hanako when it turns out Hisao misunderstood her reasoning.
* RuleOfSymbolism: During a game of air hockey, Hisao brings up the fact that Hanako is sometimes taking the give-and-take/back-and-forth dynamic of their relationship way too far and her insistence on immediately returning every single favor on Hisao's part makes their relationship feel overly rigid. During the majority of the game/argument, the score reflects this rigid dynamic with Hanako always scoring one point for herself after Hisao's scored one. It's not until Hisao makes his final argument that he starts pulling ahead.
* ShoutOut: Quite a few. Several well-known memes, such as the 'Healthy adolescent sex drive', Kenji's 'Manly Picnic" line, Hanako flipping a coin as well as the chocolate meme make a cameo in some form or another.
** Hanako's initial reaction to Hisao bringing lubricant along is a nod to Emi's arc.
** When Hanako comes to Hisao's room for comfort, Hisao wonders if she means comfort or "comfort". This is a reference to an event with Misha in Shizune's route.
** When Hanako and Hisao win a pluche puppy in a crane game, Hanako calls him 'Niji' and later gives him to Lilly as a present. Niji was the name of Lilly's guide dog in an early version of the game.
** Akira's remark that they thought about having a guide dog for Lilly at some point, but ultimately decided against it is another reference to the fact that Niji got scrapped.
** At some point while a depressed Lilly is visiting Hisao, he sees the pluche dog in Lilly's handbag. This is a reference to the final CG of Shizune's bad end.
** Hisao and Hanako play several matches of Street Fighter II. Hanako plays with Dhalsim and Vega (the masked guy, not the dictator) and Hisao fights with Sagat.
** Who could forget the final words of the story? It's the very sentence most associated with Hanako after the release of the full game.
* SittingOnTheRoof: Hanako goes here near the end of the story to avoid everyone else.
* StealthPun: Hanako's therapist often wears a violet blouse. This literally makes her a [[IncrediblyLamePun 'Shrink in violet']].
* StepfordSmiler: Hisao notes that Lilly's ability to keep up appearances even while being in a depressed mood is a little unsettling.
* TakeAThirdOption: Lilly doesn't enjoy the idea of either giving up her life in Japan or giving up a chance to reconcile with her estranged parents. [[spoiler: She opts to stay in Japan, but drop by in Scotland whenever she has a school break and also offers to call every few days.]]
* TemptingFate: On their way to town, Hisao and Hanako are surprised by a rainstorm. Hisao suggests running the rest of the way. Hanako worries about Hisao's heart, but Hisao insists he'll be fine since his daily morning runs significantly improved his stamina. [[spoiler: Then he gets into a collision with a cyclist who was, like him, blinded by the rain and his heart promptly goes nuts. Ouch!]]
* ThePowerOfLove / ThePowerOfFriendship: Hisao brings up the trope during his meeting with Hanako's therapist, suggesting that instead of therapy, maybe Hanako really just needed friends. Miss Yumi is quick to mention that the two are not mutually exclusive and Hanako benefits most from having both.
* TheShrink: Miss Yumi is type 3.
* TheStationsOfTheCanon: A variation. In the VN, Lilly's route and Hanako's route involve several shared events like Hanako's birthday party and Lilly having to go and visit her aunt in Scotland, but Hanako's arc ends sooner. The story is structured around several events that also happen in Lilly's arc, but since Hisao is now dating Hanako instead of Lilly, things play out differently.
** ForWantOfANail: The trio still goes to Hokkaido, but since Hanako reminds Hisao to take his meds and since Hisao's been working out to get healthier, he doesn't have a heart attack. Lilly's Scotland dilemma still comes up, but this time [[spoiler:it's Hanako who convinces Lilly to follow her heart and stay in Japan]].
** InSpiteOfANail: Hanako still ends up in the newspaper club, though the circumstances that cause her to join are a bit different.
* ThereAreNoTherapists: Averted. Hanako's therapist plays a fairly important role in the story and insists she has her own role to play in Hanako's recovery process.
* TheTalk: The nurse gives one to Hisao. Not so much about the act itself, but about doing it responsibly.
* TraumaCongaLine: Hanako, Hisao and Lilly each go through one of these in the second half of the story.
* TriangRelations: Hanako worries sometimes that Lilly is secretly in love with Hisao herself and that's the reason she's been withdrawn lately. It later turns out her parents' summoning was what was burdening her and Lilly later tells Hanako in no unsure terms that she's not in love with Hisao. (although she nevertheless feels a strong sisterly affection for him)
* WeUsedToBeFriends: Lilly confides in Hanako that she and Shizune were once on friendly terms and used to have silly fun together. That all changed once they were forced to work together and Lilly started airing grievances on behalf of other students as well. Lilly reminding Shizune of this ultimately serves to take the personal element out of their feud.
* WhatTheHellHero: In the hospital, Hisao mopes about how [[spoiler: his heart attack erased all the progress Hanako made since they started dating]]. Yumi calls him naïve for assuming a trauma of the kind Hanako has is just going to go away without the occasional relapse and tells him that Hanako's psychological issues aren't going to magically disappear just because he's dating her.
** On the flip side, his relationship isn't going to magically disappear just because she has psychological issues, either.
* WholeEpisodeFlashback: Chapter 0, a therapy session between Hanako and Miss Yumi that takes place before Hanako met Lilly, is inserted between chapter 5 and chapter 6, after Miss Yumi was already introduced in the main storyline.
* YamatoNadeshiko: Hanako's therapist, Miss Yumi Takawa, is a grandmotherly Yamato Nadeshiko and behaves like an older Lilly. Both Hisao and Hanako take note of the similarity in demeanor and Hanako's subconcious comparison of the two is the basis of the major conflict in the story.