Jin Akanishi : Hayato Yabuki
Kazuya Kamen:hi : Ryu Odagiri
Yukie Nakama : Kumiko "Yankumi" Yamaguchi

Hiroshi Ryogoku : Makoto Sugawara
Jun Inoue : Ginji Kurokawa
Katsuhisa Nam:e : Goro Sawatari (Kurogin Gakuen Vice Principal)
Keisuke Koide : Kosuke Hyuuga
Ken Kaneko : Tetsu Asakura
Ken Utsui : Ryuuichiro Kuroda
Kenji Anan : Kozo Wakamatsu
Mikihisa Azuma : M:ayoshi Baba
Mokomichi Hayami : Hikaru Tsuchiya
Otoha : Hitomi Hakucho
Shinji Uchiyama : Minoru Tatsukawa
Teppei Koike : Keita Takeda
Tomohiro Waki : Teruo "Kuma" Kumai

Fuyuki Moto : Tak:hi Kameyama
Hideo Ishiguro : Taku Yabuki (Hayato's brother; ep 8)
Katsuya Kobay:hi : Kudo (eps 3, 10)
Magii : Shinji Inomata
Shosuke Tanihara : Takuma Kyuujou
Toshiya Saki : Taichi Inuzaka
Yukiko Ikeda : Sayuri Wanibuchi