[[quoteright:215:http://static.tvtropes.org/pmwiki/pub/images/Usagi_Drop_07-Small.jpg]]
[[caption-width-right:215:[[ABoyAndHisX A man]] [[MakesSenseInContext and his aunt]].]]

->''"[[ArcWords Don't you think this world is better than you expected?]]"''

->''"One bright autumn day, I learned of Grandpa's demise. Hence I took a leave of absence, packed my bag, and rushed home. Only to find a little girl I had never seen before."''

When Daikichi Kawachi questions his mother, he learns that the six-year-old girl is Rin, his grandfather's ''illegitimate daughter.'' When everybody else in the family makes excuses to avoid taking care of her, Daikichi gets pissed off and impulsively takes her in himself.

''Bunny Drop'' (''Usagi Drop'' in Japanese) is a manga by Yumi Unita centering on the drama of bachelor Daikichi and the change he makes to his life so he can care for Rin. From buying her clothes, getting her into kindergarten, transferring to a job with better hours, and trying to work out what to do regarding Rin's absentee mother Masako, Daikichi does all in his power to do right by Rin, no matter the cost to himself.

The series is licensed by Creator/YenPress, which has started releasing it in North America. An anime (viewable on [[http://www.hulu.com/bunny-drop Hulu]]) ran in the {{noitaminA}} block in the Summer2011AnimeSeason, and a live-action movie was released in July of that year.
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!!This series features examples of:
* AccidentalPervert: Happens to Daikichi early on.
* AllGirlsWantBadBoys: Averted with [[spoiler:Kouki. When he goes through his bad-boy phase, it ends up driving Rin away from him.]]
* ArtShift: All of the prologue scenes in the anime are colored pastel-style, in contrast to the more conventional coloring in the rest of the episode.
* BathroomStallOfOverheardInsults: Daikichi overhears some soon-to-be-ex-co-workers accusing him of abandoning them as he's about to enter the bathroom. He opts to just let the matter drop.
* CallingTheOldManOut: Daikichi. To his '''entire family''' at their treatment of Rin. Both a CrowningMomentOfHeartwarming along with a CrowningMomentOfAwesome.
* CanonDiscontinuity: The anime implies that Daikichi will have a relationship with Kouki's mother, and only covers the events of manga volumes 1-4.
* CharacterDevelopment: Every main character gets this, but Daikichi and Rin get special mention.
* ChildrenRaiseYou: Daikichi goes from being an [[ManChild immature manchild]] to being a responsible and proactive caretaker, with a few missteps along the way. He even [[LampshadeHanging lampshades]] this at the end of volume 2. Counts as major CharacterDevelopment.
* ContinuityNod: After the TimeSkip, Rin still has in her room the desk that they bought when she entered elementary school.
* CutenessProximity: Several adults are afflicted by this around Rin. Rin herself seems to like kids younger than herself and babies.
* DeathIsASadThing: Rin's understanding of Gramps' death, and a fear of her own death that results.
* DefrostingIceQueen: Daikichi's mother wants nothing to do with Rin at first. However, when Daikichi brings her back for a family visit, she begins warming up to the girl to the point where she asks Daikichi and Rin to visit her again.
* DelayedReaction: When Daikichi takes Rin shopping for some clothes, he asks how some she doesn't get a skirt. She mentions that skirts aren't allowed at nursery school. He agrees with her for a moment, then it hits him that he needs to register her for school.
* ElectiveMute
* EmotionlessGirl: {{Deconstructed}}: Rin acts like this around people she's afraid of or doesn't trust (most everyone to begin with), and some of Daikichi's relatives cite it as a reason why they won't take her in. We soon find out that Rin is anything but.
* EvolvingCredits: in the anime, the ending sequence changes slightly to match the content of the episode during the first section and also in the colored pencil/chalk pastel drawing of Rin towards the end
* FacePalm: Please note: asking a little girl to keep a secret [[http://www.mangareader.net/1618-50996-13/usagi-drop/chapter-20.html will have unexpected results]].
* FromTheMouthsOfBabes: In episode 7, Reina and Rin talk about Haruko and Daikichi's marital status. They say that Haruko would be better off being single, while Daikichi would be better off married, without fully comprehending the situations the adults are in.
* FunnyBackgroundEvent: A few in the anime, one of them involves Rin playing on her new futon while Daikichi is on the phone
* HarshWordImpact
* HappilyAdopted
* IdenticalGrandson: Daikichi looks so much like a young version of his grandfather that some relatives at the grandfather's wake thought Daikichi was a ghost. This is also why Rin initially becomes attached to him.
* IdiotsCannotCatchColds: When Rin gets ill, Daikichi mutters he's lucky he's an idiot.
* IllNeverTellYouWhatImTellingYou: Rin abruptly starts singing. When asked why, her response is "It's a secret, so I can't tell anyone at home about Parents' Day!"
* ImagineSpot: When talking with his parents, Daikichi has frequent {{Flashback}}s to his childhood (often accompanied by the informative caption "Showa-era child rearing!")
* IronicEcho:
** "This is sweat!"
* ImTakingHerHomeWithMe: Gotou says she wants to take Rin with her in episode 4.
* IsThatCuteKidYours: Daikichi gets this a couple times. He has no idea initially how to handle it, since "No, she's my aunt" is not something you want to go around saying.
* LastDisrespects: Many of the family members attending Souichi's funeral are shocked to learn that he recently had an illegitimate child, Rin, shortly before his death. Her presence at the funeral isn't particularly welcomed and they mostly ignore her. When the time comes for the family to talk about what to do with her, shortly after the actual funeral proceedings, the discussion quickly devolves into an outlet for expressing their anger toward the situation and talking about how odd they find Rin and her dubious origins.
* MaamShock: Male version -- her first morning with Daikichi, Rin calls him "oji-san," which shocks him as much because he's just 30 as because she's his ObaSan in the blood relationship sense. (The official translation obscures the joke by rendering these as "mister" and "ma'am".)
* ManChild:
** Daikichi. He has the best of intentions, but is very much out of his depth. While some of it is overboard, there's good reason for his mom to regularly take him to task about child-rearing. In short, while there's no doubt that Daikichi ''cares'' and tries to do the right thing, actually getting his act together to do so is a process. Even as he gets better at being a father, other people still remark upon the oddness of the fact that, say, Rin does a significantly larger portion of the cooking than you would normally anticipate a seven-year-old to be doing
** Masako is a much straighter example. She's described by Daikichi's grandfather as simply not being mature enough to be a mother yet. Given from what we've seen of her on-screen this is unfortunately very, very true.
* MayDecemberRomance: Daikichi's grandpa and Masako.
* MeaningfulEcho: In the first volume, Daikichi notes that he would be lying if he didn't call raising Rin a sacrifice, but hopes that he can say it in the future. At the end of the fourth (a little over a year after taking Rin in), he says that it's not one.
* MeaningfulName: In Japanese, the bellflower is called the ''rindou''. On seeing Rin pick bellflowers for her father's grave, Daikichi realizes his grandfather named her after his favorite flower.
* MissingMom - A plot point is Daikichi learning the identity of Rin's mother and confronting her.
* NotWhatItLooksLike: When Daikichi takes his cousin Haruko shopping in episode 7, they run into Yuriko. When he sees them, he panics, then immediately tells the latter that the woman with him is merely his cousin on his mother's side. Haruko teases him a bit about it afterwards.
* OrphansPlotTrinket: Rin's baby book. Gives us the first clue about Rin's mother and is the hiding place of Daikichi's grandfather's will.
* NotAllowedToGrowUp: Averted; the later chapters deal with Rin as a teenager. See TimeSkip.
* [[NotBloodSiblings Not Blood Related]]: [[spoiler: Chapter 54 reveals that Rin isn't Souichi's biological daughter.]]
* ParentalAbandonment: Rin; father dead, mother's whereabouts unknown. Once mother's whereabouts discovered, [[spoiler:mother still wants ''nothing'' to do with her because she's irresponsible.]]
* PottyFailure: Rin's bedwetting in chapter 4 and episode 3 of the anime; partly stress, partly scared to enter the bathroom alone at night.
* {{Retcon}}: [[spoiler: Rin not being related to Daikichi by blood after all.]]
* SandInMyEyes: When Daikichi gets teary-eyed about Rin's feelings for him, he claims it's sweat.
* SickEpisode: Rin gets sick in episode 10. Fortunately for a worried Daikichi, Yuriko stops by to visit them and help him take care of Rin.
* SinkOrSwimFatherhood
* ShipTease: A lot for Daichiki/Yukari and Kouki/Rin.
* ShoutOut:
** Daikichi and Rin do the Algorithm Dance from ''PitagoraSuicchi''.
** "This isn't VideoGame/DragonQuest!"
* StockShoujoBullyingTactics: Some third-year students corner Rin and get on her case for walking down the wrong corridor.
* SugarAndIcePersonality: Rin is the "Once You Get to Know Her" type, very shy and quiet to anyone she doesn't know.
* TimeSkip: At the start of volume 5, we skip ten years and Rin is suddenly a teenager. The final chapter is set 2 years after that.
* UnluckyChildhoodFriend: [[spoiler:Kouki, to Rin.]]
* UnresolvedSexualTension:
** Rin and Kouki are at this stage when the post-TimeSkip arc begins.
** [[spoiler:Further chapters [[strike:show hints of this]] beats you over the head with this between Daikichi and Ms. Nitani as well.]]
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