I Don't Like You at All, Big Brother!!

I Don't Like You at All, Big Brother!!
File:Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! Volume 1.jpg Japanese cover of Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! featuring Nao Takanashi
お兄ちゃんのことなんかぜんぜん好きじゃないんだからねっ!! (Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!!)
Genre	Romantic comedy, harem
Manga
Written by	Kouichi Kusano
Published by	Futabasha
English publisher	NA: Seven Seas Entertainment
Magazine	Web Comic High!
Demographic	Seinen
Original run	August 29, 2008 – September 16, 2016
Volumes	12
Anime television series
Directed by	Keitaro Motonaga
Written by	Sayuri Ooba
Music by	Tomoki Kikuya
Studio	Zexcs
Licensed by	NA: Media Blasters
Original network	Chiba TV
Original run	January 9, 2011 – March 27, 2011
Episodes	12

I Don't Like You at All, Big Brother!! (Japanese: お兄ちゃんのことなんかぜんぜん好きじゃないんだからねっ!!, Hepburn: Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!!, literally: "It's because I Don't Like Big Brother at all, isn't it!!") (referred to as OniSuki for short) is a Japanese seinen manga series written and illustrated by Kouichi Kusano which was serialized on Futabasha's Web Comic High! service from August 2008 to September 2016. It has been licensed in North America by Seven Seas Entertainment. It has been adapted by Zexcs into an anime series which aired in Japan between January 9, 2011, and March 27, 2011. An additional original video animation (OVA) episode has also been released. A character song CD and a mini-CD soundtrack was adapted from the anime.

Plot

Nao Takanashi loves her brother Shūsuke despite the incest taboo. Nao thinks that Shūsuke is her blood relative, but in fact she is an adopted daughter, whose parents have died. After Nao learns the fact, she wants to fall in love normally with Shūsuke because siblings by adoption can marry under the family law in Japan. However, she finds herself competing with Shūsuke's childhood friend, Iroha Tsuchiura, and his class president and yaoi lover, Mayuka Kondō.

Characters

Main

Nao Takanashi (高梨 奈緒, Takanashi Nao)

Voiced by: Eri Kitamura

Shūsuke Takanashi (高梨 修輔, Takanashi Shūsuke)

Voiced by: Toshiyuki Toyonaga / Hiromi Igarashi (Child)

Shūsuke is the son of the Takanashi family. He is rather perverted, owns a large number of porn magazines and is always looking for panty shot opportunities. Recently he has started using the term "not betraying Nao" implying he loves her, or at least wishes to have her see him as a good older brother. He does admit to having some romantic interest in Nao. He is not aware of Nao's knowledge of either the truth about their relationship or the fact she knows about all his dirty habits. He is a heavy sleeper and Nao has to wake him up for school, not that she minds because it allows her the opportunity to do things she normally wouldn't if he was awake, in short this is when she shows her true self.

Iroha Tsuchiura (土浦 彩葉, Tsuchiura Iroha)

Voiced by: Marina Inoue

Iroha is Shūsuke's childhood friend from before Nao's adoption. Having played 'doctor' with him a lot as a child (which was Shūsuke's excuse to see her naked), she claims to be Shūsuke's lover and constantly makes advances towards him. She is also something of a stalker, watching him in his house through a telescope and using night vision goggles to stalk him. She is even called a "Genuine Stalker" due to her very detailed reports of Shūsuke's late night actions and activities. She is in constant competition with Nao over Shūsuke's affections, though they occasionally work together when someone else catches his eye. Oddly, despite the fact she has openly stated she is willing to have sex with Shūsuke, and even initiating the first move, he seems to not want this. It is hinted this may be due to his believing that his actions made her this way.

Mayuka Kondō (近藤 繭佳, Kondō Mayuka)

Voiced by: Kazusa Aranami

Shūsuke's classmate and class president, with a strong interest in Boy's Love magazines. When Shūsuke tears up one of her magazines by accident, she makes him her 'pet'. She forces him to purchase and review explicit BL magazines which she interprets as having a shared interest. Despite Shūsuke's belief that she may ask him to do something more perverted at some point, she treats him more as a boyfriend - making him bentos and coming to wake him up in time for school. Over time her feelings for Shūsuke increase because of his apparent acceptance of her BL magazines. She becomes attracted to Shūsuke's pink and sensitive nipples due to the fact she has never seen a naked man before, though despite him being her pet, she doesn't use this to her advantage. Although she confesses that she has feelings of wanting to dominate Shūsuke, she loses memory of the incident after being hit by a truck.

Others

Keiichirō Kishikawa (岸川啓一郎, Kishikawa Keiichirō), Takumi Yamashiro (山代拓実, Yamashiro Takumi) and Daigo Kurosaki (黒崎大吾, Kurosaki Daigo)

Voiced by: Shinnosuke Tachibana, Kenta Matsumoto and Mitsuhiro Ichiki

Shūji Takanashi (高梨 修司, Takanashi Shūji)

Voiced by: Hideki Ogihara

Shūji is Shūsuke's father from whom he seems to have inherited his perverted nature. He took Nanaka to a porn movie on their first date and later attempts to 'confiscate' one of his son's magazines.

Nanaka Takanashi (高梨 菜々香, Takanashi Nanaka)

Voiced by: Sayaka Ohara

Nanaka is Shūsuke's mother who always sees her son as a perverted child.

Hirono Kusuhara (楠原 尋乃, Kusuhara Hirono)

Voiced by: Ryoko Shiraishi

Hirono is Nao's friend who questions why both Iroha and Nao love Shusuke.

Haruka Katō (加藤 春華, Katō Haruka)

Voiced by: Eriko Nakamura

Haruka is Nao's friend.

Shizuru (静留)

Voiced by: MAKO

A fictional character from a little sister-themed eroge that Shūsuke has and who often shows up in his perverted dreams, usually those brought on by near death experiences.

Richika Matsuhiro (松代 莉智香, Matsuhiro Richika)

Anime original characters

Ran Yatagai (谷田貝 蘭, Yatagai Ran)

Voiced by: Minori Chihara

She is a cosplayer who goes under the alias 'Princess Leila' and is very into her roleplay, suggesting she has a very loose grasp of reality. She seemingly makes a move on Shūsuke, dubbing him 'her saviour', and puts him through many strange trials, which are later revealed to train him to act out a warrior role in a cosplay event.

Rin Yatagai (谷田貝 凛, Yatagai Rin)

Voiced by: Rina Satō

Media

Manga

The original manga, written and illustrated by Kouichi Kusano, began serialization on Futabasha's Web Comic High! service from August 29, 2008. The serialization finished on September 16, 2016 with a total of twelve released volumes. Seven Seas Entertainment released the manga in North America from August 2012 to March 2019.

Audio CDs

A character song CD, entitled Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! Character Songs - Uta Nanka Zenzen Uta Itakunain Dakara ne!! (「お兄ちゃんのことなんかぜんぜん好きじゃないんだからねっ!!」キャラクターソング 歌なんかぜんぜん歌いたくないんだからねっ!!), was released on March 13, 2011, by Starchild Records. The CD contains one disc consisting of eleven different short tracks, and the disc length in entirety is five minutes and thirty nine seconds. Also, the Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! DVD comprising all twelve episodes of the anime also includes a bonus CD containing the opening and ending theme songs, and their off vocal versions.

Anime

Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!! has been adapted by Zexcs into a 12-episode anime television series, which aired in Japan on Chiba TV network between January 9, 2011, and March 27, 2011. The television airing includes many censor bars obscuring dozens of panty shot scenes in each episode in the shape of the penguin and cat mascots for the show, which are removed for the Blu-ray versions of the episodes. The anime was directed by Keitaro Motonaga. An additional OVA episode was included on the final Blu-ray volume, released on July 13, 2011. The opening theme is "Taste of Paradise" by Eri Kitamura while the ending theme is "Ari Ari Future" (アリアリ未来, Ari Ari Mirai) by Kitamura, Marina Inoue and Kazusa Aranami.

Episode list

No.	Title	Original air date
1	"Wicked Usual Day of a Brother and Sister" Transliteration: "Ani to Imōto no Yokoshima na Nichijō" (Japanese: 兄と妹のヨコシマな日常)	January 9, 2011 (2011-01-09)
Nao Takanashi has long been trying to tempt her brother, Shūsuke, into entering an immoral (i.e. incest) relationship with her, with Shūsuke barely being able to resist. Nao goes to great lengths for Shūsuke to think of her perversely by doing things such as letting him purposely look underneath her skirt (and once letting him see her completely naked) but then she always gets him into trouble afterward so as to make it look like Shūsuke is the immoral pervert. One day, while Nao searches through Shūsuke's room for his collection of porn magazines, she then finds a hidden family photo album and is surprised to find out that there are no childhood pictures of her in it. After Shūsuke was finished being scolded about his porn collection, Nao confronts her parents, Shūji and Nanaka, about the album. They then tell her the truth: 10 years prior to the story, a car accident killed Nao's real parents and left Nao with memory loss, so Shūsuke insisted that Shūji and Nanaka adopt her into their family where he vowed to care & look after her as his sister. Nao, curiously enough, is more shocked by the fact she and Shūsuke are not actually blood related. At that instance, Nao realizes that a possible intimate relationship with him would be acceptable. Nao then requests Shūji and Nanaka to keep the fact she learned the truth from Shūsuke so that they can retain their sibling status.
2	"Twintail, Attacking Brother and Sister" Transliteration: "Tsuintēru, Kyōdai o Shūgeki" (Japanese: ツインテール、兄妹を襲撃)	January 16, 2011 (2011-01-16)
Nao briefly spots a twin-tailed girl, similar to what appeared in Shūsuke's photo album. At school that day, a girl named Iroha Tsuchiura joins Nao's class and makes friends with Nao. Iroha later comes to Shūsuke, reintroducing herself as his childhood friend and kisses him, proclaiming they are lovers due to games of Doctor they played when they were young. Shūsuke feels ashamed of his past perversion, throwing away all his porn and his perverted nature, which causes Nao to grow concerned. Meanwhile, Shūsuke becomes increasingly worried that Iroha seems to know everything about his private life, and later she blackmails him with threats of telling Nao about their games of Doctor.
3	"A Rival Appears! Brother and Sister in Trouble" Transliteration: "Raibaru Shutsugen! Kyōdai Daipinchi!" (Japanese: ライバル出現! 兄妹大ピンチ!)	January 24, 2011 (2011-01-24)
Iroha coerces Shūsuke into going on a date with her, and Nao decides to follow them, while her friends, Haruka and Hirono, decide to tail her as well. Iroha takes Shūsuke various places including a movie theater, an arcade and a swimsuit store. At the end of the date, Iroha tries to get Shūsuke to kiss her, but he refuses. Iroha tries to drag him somewhere else, but Nao manages to bail him out. Nao begins treating Shūsuke coldly, leading him to realize that she knew about his date with Iroha. When Iroha scares Shūsuke with the notion that she knows everything he's been doing (having been watching him through a telescope), Shūsuke rolls on the floor when Nao enters, getting a look at her panties which reawakens his normal perversion, much to Nao's delight.
4	"If My Little Sister Wore a Swimsuit" Transliteration: "Imōto ga Mizugi ni Kigaetara" (Japanese: 妹が水着にきがえたら)	January 31, 2011 (2011-01-31)
Nao coerces Shūsuke into going to the beach with her, though coincidentally they end up running into Haruka, Hirono and Iroha, who Nao recognizes as the pigtailed girl from Shūsuke's childhood photos. Nao and Iroha end up competing with each other for Shūsuke's attention, though it tends to just bring him pain. Nao accidentally knocks him unconscious with a rented boat, and he dreams of his favorite eroge character. Nao and Iroha compete with each other over who gets to perform mouth to mouth resuscitation, though in the end, he is revived by one of his male friends.
5	"Mr. X Strikes Brother!" Transliteration: "Misutā Ekkusu Ani Shū!" (Japanese: ミスターX 兄襲!)	February 6, 2011 (2011-02-06)
7	"Brother and Friends' Akiba" Transliteration: "Anitachi no AKIBA" (Japanese: 兄たちのAKIBA)	February 20, 2011 (2011-02-20)
Shūsuke and his friends go on a trip to Akihabara in search of adult goods while Nao and Iroha decide to follow them. After visiting an adult DVD store, the group gets into an argument about their desired fetishes and break off in search of them, leaving Shūsuke alone. However, they soon come to apologize to each other and go to a maid café holding a 'little-sister' service.
8	"Aim for Brother's Top!" Transliteration: "Ani no Toppu o Nerae!" (Japanese: 兄のトップをねらえ!)	February 27, 2011 (2011-02-27)
When Shūsuke gets a report about him failing in all of his subjects, he then realizes that he has to take a follow-up exam or risk having to take summer classes. Believing that she was the cause of Shūsuke's grade for calling him out each night, Mayuka feels guilty and offers to help him study for an upcoming exam. But while they were studying, Nao and Iroha decide to intrude on them. As Mayuka tries to get Shūsuke to study, Nao and Iroha compete to try and catch his attention. After some time later, Iroha presents surprise tickets for everyone to go to a local pool park if he passed, which encourages Shūsuke enough to pass. At the pool, Shūsuke spends most of his time teaching Mayuka how to swim, leaving Nao and Iroha pretty jealous. During that time, Mayuka becomes amorously focused with Shusuke's nipples, having never seen a man naked before. As Nao tries to press Mayuka on her attraction to Shūsuke, he nearly drowns after Iroha forces him on a water slide, but is revived thanks to Mayuka's 'cardiac massage'. Afterwards, Mayuka leaves Shūsuke a large list of BL books to buy while she is on holiday.
9	"Summer! Festivals! Brother and Sister's M:i:V" Transliteration: "Natsu Da! Matsuri Da! Kyōdai no Emu Ai Vī" (Japanese: 夏だ! 祭りだ! 兄妹のM:i:V)	March 6, 2011 (2011-03-06)
11	"Calling out to my Brother from the Center of the World" Transliteration: "Sekai no Chūshin de Ani o Sakebu" (Japanese: 世界の中心で兄を叫ぶ)	March 20, 2011 (2011-03-20)
As Shūsuke puts up with more of Ran's dubious rituals, Rin forces Nao to hang out with her by threatening to tell Shūsuke that she had been stalking him, looking for an opportunity to kiss her. Shūsuke and Nao soon become paranoid around each other when they see each other hanging around the respective Yatagai sister. Nao and Iroha determine that the only way to get Rin off her back is to convince Ran that Shūsuke isn't her saviour by pretending to be prophets on their mobile phones. Rin catches onto their plan and tries to get the drop on Nao but ends up kissing Iroha instead, though she immediately takes a liking to her lips and runs off with her. Ran later explains to Nao that she wanted to mentally train Shūsuke to play as a warrior for a cosplay event, though when the day of the event arrives, Shūsuke gets the address wrong and arrested for wearing his skimpy outfit in public.
12	"I Don't Like My Brother At All!" Transliteration: "Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!!" (Japanese: お兄ちゃんのことなんかぜんぜん好きじゃないんだからねっ!!)	March 27, 2011 (2011-03-27)
Shusuke and Nao are left alone in the house when their parents go on an overnight trip. Nao takes the opportunity to try and seduce Shusuke by wearing a maid's outfit as he tries to prepare dinner. After washing up after a little accident in the kitchen, the two become paranoid when Nao starts hearing strange panting, which turns out to be the AGE Explorers, who invite Shusuke out on an unsuccessful search for porn, which gives him a cold. As Nao tends to it, Iroha and Mayuka pay a visit, which once again turns into a battle for his attention.

OVA

No.	Title	Original release date
1	"Little Sister's Diary of Brother's Perverted Habits" Transliteration: "Imōto Yori Ai wo Komete Ani no "Seitai Kanatsuki"" (Japanese: 妹より愛をこめて 兄の『性態観察記』)	July 16, 2011 (2011-07-16)

External links

• Web Comic High! (in Japanese)
• Official website (in Japanese)
• Official anime website at the Wayback Machine (archived September 9, 2015) (in Japanese)
• Official anime website at the Wayback Machine (archived September 18, 2015)
• I Don't Like You at All, Big Brother!! (manga) at Anime News Network's encyclopedia
• I Don't Like You at All, Big Brother!! (anime) at Anime News Network's encyclopedia