Junior High student Nao's brother complex is so strong, it's almost at the point of incest. She's determined to make her brother, High School student Shuusuke, see her as a woman. So determined, that she goes as far as going into his room to throw away all his non-incest related porn. But as she's looking for his porno stash, she finds a photo album... and she's not in any of his childhood pictures. What is going on?


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Her younger brother [Takashi Oohara](https://anilist.co/staff/96636/) is also a voice actor.

__Non-anime roles:__
- Harran - Goddess of Victory - Nikke (VG)
- Ningguang - Genshin Impact (VG)
- Mikasa - Azur Lane (VG)

Diana Galván Santos is a Mexican voice actress.

High School junior Takanashi Nao has a problem: she has a crush on her dreamy older brother, Shuusuke. Fortunately, when Nao discovers that she was adopted as a child and they&rsquo;re not related by blood, it seems like the coast is clear&mdash;but Shuusuke just doesn&rsquo;t see it that way.<br><br>
To make matters worse, Nao finds herself in direct competition against Shuusuke&rsquo;s hot childhood friend, Iroha, not to mention class president Mayuka. As all three girls vie for Shuusuke&rsquo;s attention, Nao soon learns that all is fair in love and war!
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(Source: Seven Seas Entertainment)

According to the official website, the fifth volume of the Blu-ray and the DVD of Onii-chan no Koto nanka Zenzen Suki Janain Dakara ne!! will include an unaired episode. It will be released on July 6th.

Nanaka Takanashi