A mathematics genius girl, Nina Machida, starts in a new school and attempts to find her elder sister, who vanished from that school one year ago.
Reina Tanaka
Nina Machida
Sayumi Michishige
Sayuri Tachikawa
Dori Sakurada
Kazuki Sato
Haruka Kudo
Noa Miyashita
Masaki Sato
Rion Miyaeki
Haruna Iikubo
Rin Udagawa
Ayumi Ishida
Runa Jinnan
Mizuki Fukumura
Haru Akasaka
Erina Ikuta
Satoko Nakano
Kanon Suzuki
Mei Ōtsuka
Chisato Okai
Satoko Mita
Mai Hagiwara
Yuko Yotsuya
Chinami Tokunaga
Takako Jingu
Saki Shimizu
Mirai Azabu
Karin Miyamoto
Yū Meguro
Akari Saho
Mina Hatsudai
Riho Sayashi
Sana Nagata
Momoko Tsugunaga
Tomoko Harajyuku
Erina Mano
Reiko Shirogane
Airi Suzuki
Yuri Uehara
2021 · Series
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