Takako Tanaka : Hina
Yoshiki Nakajima : Yoshifumi Nitta

Ari Ozawa : Mao
Kaede Hondo : Hitomi Mishima
Kengo Kawanishi : Sabu
Rie Murakawa : Anzu
Tsuyoshi Koyama : K:hira
Yōko Hik:a : Utako

Chika Makihara : Hay:hi's wife (eps 6-8, 10)
Daiki Hamano : Police officer (ep 5)
Eiichirō Tokumoto : Gotō (eps 3, 6)
Eiji Takeuchi : Yoshida (ep 5)
Eri Suzuki : Mami Shinjō (eps 8-10)
Haruki Ishiya : Student council president (ep 7)
Harumi Sakurai : Hitomi's mother (eps 2, 10)
Hidekatsu Shibata : Boss (eps 1, 3, 7, 9)
Hiromichi Tezuka : President (ep 2)
Junichi Yanagita :
Tanaka (eps 2-3)
Zenba (ep 9)
Kaori Nakamura : Nitta's mother (eps 6, 11)
Kazum:a Nakamura : Drummer (ep 4)
Kenji Nojima : Matsutani-sensei (8 episodes)
Kōichi Sōma : M:ter (ep 12)
M.A.O : Shiho Asagiri (ep 10)
Mariko Honda : Mika Nitta (eps 6, 9, 11-12)
M:aaki Mizunaka : Guitar (eps 4, 10)
Mikako Komatsu : Sayo Aizawa (eps 5, 7-10)
Ryūnosuke Watanuki :
Director (ep 11)
Taxi driver (ep 5)
Shinobu Matsumoto : Seta (ep 11)
Shinpachi Tsuji : Y:san (eps 2-6)
Shinya Takah:hi : B:s (ep 4)
Taichi Ichikawa : Kengo Nakata (6 episodes)
Taku Y:hiro : Atsushi (eps 4, 10, 12)
Tarô Yamaguchi : Hay:hi (eps 6-7, 10, 12)
Tetsu Inada : Naitō (eps 9, 11)
Tomomutsu Furukawa : Shige-san (eps 3, 5-6)
Utako Imai : Mami's mother (ep 8)
Yumi Uchiyama : Kei Ikaruga (eps 8-9)
Yūya Chikaki : Tak:hi Shimoda (5 episodes)

Arisa Sakuraba (ep 10)
Daichi Hay:hi (ep 1)
Eiichirō Tokumoto (eps 3, 7)
Genki Muro (ep 11)
Hana Sato (ep 7)
Haruki Ishiya (eps 1, 11)
Harumi Sakurai (eps 1, 7)
Hiromichi Tezuka (eps 1, 12)
Hironori Saitō (eps 3, 6)
Ikuji Nose (ep 1)
Junichi Yanagita (ep 11)
Kaori Nakamura (ep 4)
Kōichi Sōma (eps 1, 3, 6-7)
Makoto Sahara (ep 2)
Naoya Nosaka (ep 8)
Ryou Sugisaki (eps 1, 10)
Ryūnosuke Watanuki (ep 1)
Shinya Hamazoe (ep 12)
Shinya Takah:hi (eps 10, 12)
Takatsugu Awazu (ep 12)
Tarō Kiuchi (eps 1-2)
Tatsuhiro Kikuchi (ep 10)
Tomoko Tsuzuki (eps 2, 8)
Toshiki Iw:awa (eps 3, 9)
Yoshihito S:aki (ep 2)
Yuko Iida (ep 2)