4. The Cursed Equation (2010)
After scoring a 0 on her math test, Hotori’s math teacher, Moriaki, sentences her to detention and divulges his murderous presumptions.
Release date: 2010-10-29
Season number: 1
Episode number: 4
Runtime: 25 minutes
Cast
Chiaki Omigawa
as Hotori Arashiyama (voice)
Rieka Yazawa
as Futaba Kon (voice)
Aoi Yuuki
as Toshiko Tatsuno (voice)
Takahiro Sakurai
as Uki Isohata (voice)
Miyu Matsuki
as Josephine / Yukimi Arashiyama (voice)
Miyu Irino
as Hiroyuki Sanada (voice)
Satsuki Yukino
as Kameidou Shizuka
Tomokazu Sugita
as Natsuhiko Moriaki (voice)
Ryoko Shiraishi
as Harue Haribara (voice)
Emiri Kato
as Eri Isezaki (voice)
Eri Sendai
as Yukiko Arashiyama (voice)
Hiroshi Naka
as Zenji Isohata (voice)
Mutsumi Tamura
as Takeru Arashiyama (voice)
Nobuaki Kanemitsu
as Takanori Kikuchi (voice)
Shigeru Chiba
as Shunsaku Matsuda (voice)
Takaya Kuroda
as Yuji Sanada (voice)
Toshiharu Sakurai
as Kazutoyo Arai (voice)
Yoji Ueda
as Narrator (voice)
Yuki Ono
as Ayumu Arashiyama (voice)