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'Tenkō-saki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken' TV Anime Reveals Cast Member, 2026 Debut
posted on by Crystalyn Hodgkins
ASMIK Ace revealed on Thursday that the anime adaptation of Yu Hibari and illustrator Siso's Tenkō-saki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken (The Neat and Beautiful Girl at My New School Was My Childhood Friend Who I Used to Play With Who I Thought was a Boy) light novel series will be a television anime that will debut in 2026.
The anime will star Ikumi Hasegawa as Haruki Nikaidō.
/／#てんびん
— 『転校先の清楚可憐な美少女が、昔男子と思って一緒に遊んだ幼馴染だった件』アニメ公式 (@tenbin_anime) August 28, 2025
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二階堂春希役は #長谷川育美 さんに決定！
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The anime was first announced in September 2023.
The youth romantic comedy story centers on Hayato, who transfers to a high school in the city. There, he is reunited with Haruki, whom Hayato remembers as a boy he used to play with seven years ago. Only, Hayato now realizes that Haruki is actually a girl.
Hibari launched the original light novel series on the Shōsetsuka ni Narō ("Let's Become Novelists") website in 2020. Kadokawa started publishing the series with illustration by Siso in 2021. Kadokawa will publish the light novel's ninth volume on Friday.
Ōyama launched the manga adaptation on Comic Walker as part of Kadokawa's "Dora Dora Flat" website in 2021. Kadokawa published the manga's seventh compiled book volume on July 9.
Sources: Tenkō-saki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken anime's X/Twitter account, Comic Natalie
Disclosure: Kadokawa World Entertainment (KWE), a wholly owned subsidiary of Kadokawa Corporation, is the majority owner of Anime News Network, LLC. One or more of the companies mentioned in this article are part of the Kadokawa Group of Companies.
