The first main promotional video for the TV anime The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy has been released. It was also announced that the opening theme song will be “Natsu ni Kasanete” by DIALOGUE+.
The 12-episode series is directed by Chuanfeng Xu and produced by studio project No.9, with a premiere set for July 2026.
Main Trailer:
Main Visual:

CAST:
Ikumi Hasegawa as Haruki Nikaido
Shunichi Toki as Hayato Kirishima
Miharu Hanai as Himeko Kirishima
Natsumi Haruse as Minamo Mitake
Fuka Izumi as Saki Murao
STAFF:
Director: Chuanfeng Xu
Series Composition: Deko Akao
Character Design: N Nei Kurahashi
Sound Director: Daiki Hachimaki
Music: Ryosuke Nakanishi, Naoki Tani, Yuri Morita
Music Production: Pony Canyon
Animation Production: project No.9
Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken is a romantic comedy about Hayato, who transfers from the countryside to a city high school. There, he reunites with his childhood friend Haruki after seven years. However, Hayato is shocked to discover that Haruki, whom he always thought was a boy during their childhood, is actually a girl and now an elegant, beautiful young woman.
Source: Comic Natalie
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