Hikaru Midorikawa : Kyōsuke Natsume
Tomoe Tamiy:u : Rin Natsume
Yui Horie : Riki Naoe

Keiko Suzuki :
Haruka Saigusa
Kanata Futaki
Naomi Wakabay:hi : Kudryavka Noumi
Natsumi Yan:e : Komari Kamikita
Nobutoshi Canna : M:ato Inohara
Ryouko Tanaka : Yuiko Kurugaya
Sora Tokui : S:ami S::egawa
Youko Honda : Miyuki Koshiki (ep 25)
Yuiko Tatsumi : Mio Nishizono
Yusei Oda : Kengo Miyazawa
Yuu Kamonomiya : Kyōsuke Natsume (young)

Ai Nonaka : Sakiko Watanabe (eps 1, 9, 20)
Akari Har:hima : Female student A (ep 17)
Akemi Kanda : Rei Kawagoe (eps 1, 9, 20)
Akitoshi Kimura :
Disciplinary committee member F (ep 16)
Male relative B (ep 17)
Male student B (ep 14)
Arisa Nishiguchi : Female student B (ep 12)
Asaka Imai : Student B (ep 25)
Asami Seto : Disciplinary committee member B (eps 7, 15-16)
Atsuko Tanaka : Announcer (eps 21-23)
Atsushi Kousaka :
Student A (ep 21)
TASA staff (ep 23)
Atsushi Tamaru : Student D (ep 3)
Aya Suzaki : Yumi (ep 24)
Daiki Yam:hita :
Male student B (ep 16)
Student B (ep 10)
Eiji Takeuchi :
Male student A (ep 12)
Male student D (ep 2)
Student A (ep 9)
Eimi Okada :
Disciplinary committee member C (eps 7, 16)
Takamiya (5 episodes)
Genki Muro :
Disciplinary committee member E (ep 16)
Male student A (ep 14)
Male student B (ep 1)
Student A (ep 8)
Haruo Yamagishi : Old man A (ep 4)
Hiroyuki Kagura : Student C (ep 3)
Ikumi Hayama : Female student A (ep 12)
Itaru Yamamoto :
Male student B (ep 2)
Student C (ep 9)
Jenya :
Terrorist B (ep 23)
Terrorist Woman (ep 23)
Junichi Yanagita :
Male student C (ep 2)
Student C (ep 21)
Terrorist A (ep 23)
Kana Akutsu : Disciplinary committee member A (eps 7, 15-16)
Kana Hanazawa : Suginami (ep 22)
Kazuyoshi Shiib:hi : Student B (ep 9)
Kenji Hamada : Shō Saigusa (eps 17-18)
Kenji Kitamura :
Judo club captain (ep 25)
Student B (ep 3)
Kenta Matsumoto : Male student E (ep 2)
Kentarō Kazama :
English teacher (ep 25)
Teacher (ep 19)
Kento Ishikawa : Student A (ep 25)
Kiyoko Miyazawa : Old woman B (ep 4)
Kotomi Yamakawa : Itō (eps 10, 25)
Kunihiro Maeda : B:ketball club captain (ep 25)
Lia : Doruji (ep 21)
Madoka Shiga :
Doctor (ep 14)
Emb:sy staff (ep 23)
Mariya Ise : Ami (ep 24)
M:anori Machida : Old man B (ep 4)
Mika Kanda : Cafeteria lady (ep 9)
Mitsuru Ogata : Iwan (eps 21, 23)
Momoe Kishimoto : Female relative A (ep 17)
Naomi Wakabay:hi : Chernushka (eps 21-23)
Natsuki Hanae :
Male student D (ep 1)
Student B (ep 21)
Natsumi Takamori : Female Student C (ep 1)
Nobunaga Shimazaki : Soccer club captain (ep 25)
Noriko Aoki : Katsuzawa (5 episodes)
Riko Hirai : A-chan-senpai (eps 8, 15, 26)
Rina Dendō :
Attendant student (ep 14)
Student A (ep 10)
Ryōsuke Kanemoto :
Disciplinary committee member D (ep 16)
Male relative A (ep 17)
Ryota Ohsaka :
Student C (ep 7)
Student E (ep 3)
Ryou Agawa : Old woman A (ep 4)
Ryou Hiroh:hi : Yukari Nakamura (eps 1, 9, 20)
Saori Ōnishi : Yamazaki (ep 19)
Shinobu Matsumoto :
Endō-sensei (ep 25)
Student A (ep 3)
Sota Arai : PE teacher (ep 25)
Taishi Murata :
Male student C (ep 1)
Pii-chan (ep 11)
Student B (ep 8)
Takahiro Mizushima : Aikawa (ep 20)
Tomo Muranaka : Tarō (ep 24)
Tomokazu Sugita : Male student A (ep 1)
Toru Ohkawa : Kojirō Kamikita (eps 4-6)
Toshiki Iw:awa : Student A (ep 7)
Yūichi Iguchi :
Male student A (ep 2)
Male student B (ep 12)
Student B (ep 7)
Student D (ep 9)
Yuiko Tatsumi : Midori Nishizono (eps 13-14)
Yuka Keichō : Female relative B (ep 17)
Yukiyo Fujii : Jirō (ep 24)
Yuko Iida :
Cell phone announcement (ep 11)
Female student B (ep 17)
Yuu Kamonomiya : Takuya Kamikita (eps 5-6)
Yuuki Hay:hi : Male student A (ep 16)