AMBot | 03/29/2026 | Reading Time: 3 Min.
The first main promotional trailer for the TV anime series "Tenkōsaki no Seiso Karen na Bishōjo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken" (abbreviated as "Tenbin") has been released. At the same time, it was announced that the opening theme "Natsu ni Kasanete" is by the unit DIALOGUE+. The series will start in July on channels including TOKYO MX and BS Fuji.

The new PV begins with a scene where the children Hayato and Haruki promise each other eternal friendship. It shows, among other things, the reunion of the two as teenagers after Hayato moves to the city, as well as appearances by Hayato's sister Himeko, their classmate Minamo, and the shrine maiden Saki. Additionally, the trailer provides a musical preview of the opening.

DIALOGUE+ overall producer Tomoya Tabuchi (UNISON SQUARE GARDEN) commented on the creation of the title: "The animation team's wish was for a piece that evokes the summer landscape and sunflowers. With sounds and melodies, we painted the brilliantly blue sky and the flower fields blooming beneath it, capturing as much tempo as possible to underscore the dramatic youth story of the original. We at DIALOGUE+ look forward to accompanying the stages of emotions between Hayato and Haruki—their distance, time, and thoughts—with this song."

The novel series by Hibari Yū (illustrations: Shiso) has been published by Kadokawa Sneaker Bunko since 2021 and has already been adapted into a manga. For the anime production, director Xu Chuanfeng, series composer Akao Deko, and character designer Kurahashi N Nei are responsible under Studio project No.9.

Synopsis: Hayato Kirishima transfers to a high school in the big city and unexpectedly meets Haruki Nikaidō, his childhood friend with whom he played boisterously seven years ago—and whom he thought was a boy back then.

Additional voice cast: Himeko Kirishima (Hanai Miharu), Minamo Mitake (Haruse Natsumi), Saki Murao (Izumi Fuka).

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This article was originally published in German. It was translated with technical support and editorially reviewed before publication.

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