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★Introduction
Original work by Kazumi Takayama × Production by CloverWorks
Nogizaka46 First Generation Member Kazumi Takayama challenged herself to write a long novel in the magazine "Da Vinci" starting in 2016.
The novel's title is "Trapezium."
Living as an active idol, Takayama wrote about "the青春物語 of a girl aiming to be an idol."
The novel, infused with the author's own experiences and struggles, was received with a fresh yet realistic and passionate tone, leading to a total of 300,000 copies sold for the hardcover edition released in 2018, achieving great success.

Finally, an animation film project has been launched.
During the long production process, Takayama was involved broadly in scripting and music, and with the cooperation of Studio CloverWorks—known for popular works like "Bocchi the Rock!" and "SPY×FAMILY"—the novel "Trapezium" was restructured into a film.

The protagonist, 15-year-old Yuu Higashi, is voiced by the emerging voice actress Asaki Yekawa.
The cast of the idol group "Tōzainanboku" formed by Yuu includes:
- Kurumi Nishi as Hina Shimoyama
- Ranko Hanatori as Reina Ueda
- Mika Kamei as Haruka Aikawa

Additionally, the "plan collaborator" Shinjii Kudo is voiced by Shoya Kimoe (JO1), and the volunteer organization’s grandfather, Shuichi Itami, is voiced by Mitsuyoshi Uchimura.

The theme song is performed by MAISONdes, a current leading music project, with vocals by Hoshimachi Suisei, a Vtuber from the 0th generation of "Hololive," known for her overwhelming singing voice and widespread support both domestically and internationally. The song expresses the feelings of a girl living with dreams.

"I thought when I first saw an idol. Humans shine."

Yuu Higashi, a girl obsessed with her dreams, faces various difficulties while planning to become an idol.
With the help of her friends from the "Tōzainanboku" group, what is the outcome of her high school life and her pursuit of her dream?

★Story
Yuu Higashi, a first-year high school student, is determined to "absolutely become an idol" and sets four rules for herself during high school:
1) Do not use SNS
2) Do not have a boyfriend
3) Do not stand out at school
4) Gather beautiful girls from Tōzainanboku

Yuu attends Jōshū Higashi High School, located east of the peninsula region "Jōshū," and plans to visit high schools in the other three directions to make friends with cute girls.
Behind this plan is her ambition to "form an idol group by gathering beautiful girls from Tōzainanboku."

The cast of the "Western Star" Kurumi Ōgawa, a second-year student at Nishi Techno Kogyo College aiming to win the Kosen Robot Contest;
"Southern Star" Ranko Hanatori, a second-year student at Seinan Tenelitas Girls' Academy, inspired by Lady Otome;
"Northern Star" Mika Kamei, a first-year student at Jōshū North High School, actively involved in volunteer activities.

With the support of male high school student Shinjii Kudo, who knows about her plan, Yuu befriends these three girls.

While participating in青春 events like robot contests and cultural festivals, Yuu steadily strengthens the bond among the four members of "Tōzainanboku."
Meanwhile, activities of high school girls volunteering as tour guides for tourists attract attention, leading to a TV appearance opportunity for Yuu and her friends.

Furthermore, through their encounter with the program's assistant director, Moeka Koga, they gradually gain work and become known to the public.
Eventually, the "Tōzainanboku" idol debut project begins.

"I carefully chose the members. My eyes were not wrong.
For Tōzainanboku to truly become idols, I will make everyone shine even more."

However, as they continue climbing the stairs toward their dreams, Yuu faces a **"major problem."**

★Cast
Yuu Higashi: Asaki Yekawa
Kurumi Ōgawa: Hina Shimoyama
Ranko Hanatori: Reina Ueda
Mika Kamei: Haruka Aikawa
Shinjii Kudo: Shoya Kimoe (JO1)
Moeka Koga: Yurika Kubo
Sachi Mizuno: Hina Kino
Shuichi Itami: Mitsuyoshi Uchimura

★Staff
Original work: Kazumi Takayama (Published by KADOKAWA / serialized in "Da Vinci")
Director: Masahiro Shinohara
Screenplay: Yuko Kakihara
Character Design: Rio
Chief Animation Supervisor: Rio and Kerorira
Costume Design: Masako Ito
Prop Design: Yoko Kuhara, Koji Watanabe, Akane Idota
2D Design & Special Effects: Saito Mutsumi
Art Director: Seiki Tamura
Color Design: Kazuko Nakashima
Chief Photography: Yoshihiro Sekiya
3D Director: Katsuaki Miyaji
Editing: Akihiro Mishima
Supervisors: Koji Masunari
Starry Sky Photography Cooperation: KAGAYA
Music: Katsuki Yokoyama
Sound Director: Hitoshi Ametagawa
Production: CloverWorks
Produced by: "Trapezium" Production Committee
Distributed by: Aniplex

★Theme Song
Main Theme: MAISONdes "Nanmo Nai feat. Hoshimachi Suisei, sakuma."
Ending Theme: Yuu Higashi, Kurumi Ōgawa, Ranko Hanatori, Mika Kamei (CV: Asaki Yekawa, Hina Shimoyama, Reina Ueda, Haruka Aikawa) "Hōi Jishin"

【Product Specifications】
■ Two-disc set (Main disc + Bonus disc CD)

【Limited Edition Bonus】
- Character design by Rio with newly illustrated jacket
- Bonus disc: Original Drama CD
- Art book
- Special booklet

【Audio Specifications】
① Main content: Linear PCM 2.0ch Stereo
② Main content: DTS-HD Master Audio 5.1ch Surround
③ Accessibility audio guide: Linear PCM 2.0ch Stereo

【Subtitle Specifications】
Accessibility Japanese subtitles

*Specifications and bonuses are subject to change.

(c)2024 "Trapezium" Production Committee