The official website for the Seishun Buta Yarō wa Bunny Girl-senpai no Yume wo Minai (The Young Pig-Rascal Isn't Dreaming of a Bunny Girl Upperclassman) television anime adaptation of Hajime Kamoshida's Seishun Buta Yarō light novel series revealed on Tuesday that Atsumi Tanezaki will play Rio Futaba, protagonist Kaito Ishikawa's friend. The website also revealed a promotional video and character video featuring Rio. Novel illustrator Keeji Mizoguchi drew the character visual, which has been updated with a new character illustration for each new cast announcement. The anime will premiere in October. The series will star: Kaito Ishikawa as Sakuta Azusagawa Asami Seto as Mai Sakurajima Yurika Kubo as Kaede Azusagawa Nao Tōyama as Tomoe Koga In the series, there's a rumor about a mysterious phenomenon call "puberty syndrome." For example, Sakuta Azusagawa is a high school student who suddenly sees a bunny girl appear in front of him. The girl is Mai Sakurajima, Sakuta's upperclassman and also a famous actress who has gone on hiatus from the entertainment industry. For some reason, the people around Mai cannot see her bunny-girl figure. Sakuta sets out to solve this mystery, and as he spends time with Mai, he learns her secret feelings. Other heroines who have "puberty syndrome" start to appear in front of Sakuta. Kadokawa published the first novel in the series, also titled Seishun Buta Yarō wa Bunny Girl-senpai no Yume wo Minai, in April 2014. Keeji Mizoguchi provides the illustrations. Kadokawa published the eighth volume on April 10. Tsugumi Nanamiya launched a manga adaptation of the first novel volume in the January 2016 issue of Dengeki G's Comic magazine. Kadokawa published the first volume in October 2016. Tsukumo Asakusa launched a manga adaptation of the second novel, Seishun Buta Yarō wa Puchi Devil-kōhai no Yume wo Minai (The Young Pig-Rascal Isn't Dreaming of a Petit Devil Underclassman), in the May issue of Dengeki G's Comic on March 30. Kamoshida and Mizoguchi previously worked together on The Pet Girl of Sakurasou (Sakurasō no Pet na Kanojo) light novel series, which inspired a 24-episode television anime series in 2012-2013.