
2012 · 1 season
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 TanakaNina Machida
Sayumi MichishigeSayuri Tachikawa
Dori SakuradaKazuki Sato
Haruka KudoNoa Miyashita
Masaki SatoRion Miyaeki
Haruna IikuboRin Udagawa
Ayumi IshidaRuna Jinnan
Mizuki FukumuraHaru Akasaka
Erina IkutaSatoko Nakano
Kanon SuzukiMei Ōtsuka
Chisato OkaiSatoko Mita
Mai HagiwaraYuko Yotsuya
Chinami TokunagaTakako Jingu
Saki ShimizuMirai Azabu
Karin MiyamotoYū Meguro