Manga: Oniichan no Koto Nanka Zenzen Suki ja Nai Dakara ne!! aka: Onii Chan No Koto Nanka Zenzen Suki Janain Dakara Ne
Nao Takanashi is an ordinary junior high school girl who — title notwithstanding — really likes her older brother Shuusuke (though he is unaware of this), who turns out to feel the same for her, but manages to hold himself back out of respect for their relationship.One day, whilst purging her brother's Porn Stash of anything not related to Brother-Sister Incest, Nao comes upon a family photo album full of childhood photos of Shuusuke and a girl in pigtails, but without her. When she confronts her parents, they tell her the truth: ten years prior, their close friends perished in a car accident, leaving Nao, their daughter, the sole (albeit amnesiac) survivor. But instead of angsting over the fact that she and Shuusuke are Not Blood Siblings, she's elated that she can finally pursue a full-fledged relationship with him. However, a blonde girl in pigtails appears shortly thereafter... and all hell breaks loose.Oniichan no Koto Nanka Zenzen Suki ja Nai Dakara ne!! ("I don' like you at all, Big Brother, alright?!") is a romantic comedy manga by Kusano Kouichi that started in 2008 with an anime adaptation for the Winter 2011 Anime block.
Blackmail: Kondou threatens Shuusuke with telling Nao of his Porn Stash after he rips off her yaoi magazines. Then again, that's a moot point, considering the kind of girl Nao is.
Caught with Your Pants Down: Shuusuke was completely nonplussed when Iroha told him how much he masturbates (five times a day!), down to which hand he uses. It turned out she snooped him through a telescope.
Censor Box: A baby penguin for Nao, as well as a cat for Iroha (both of which become their Animal Motifs). Strangely, like in Rosario+Vampire the censor boxes seem to be used almost entirely at random, which is especially strange considering that Nao provides an extreme close-up, uncensored Panty Shot in the opening of every episode.
Overly Long Title: Damn horribly straight to the point where it was shortened by fans as "Onichan no Koto". Anime eyecatches split the title into three lines.
Shout Out: When the AGE goes to Akihabara, we see posters for Kiss X Sis, Yosuga No Sora and Chu-Bra!!, the anime adaptations of which, like this series, were produced by Starchild.
Ran's fantasy plot has a lot of Star Wars elements in it. From Ran's dress and nickname "Leila".
Visual Innuendo: Everything at the festival in Episode 9, including fireworks symbolizing orgasm. Then the joke is made obvious at the end of the episode, implying that earlier Nao had climaxed at Shuusuke's touch.