http://www.fujitv.co.jp/kyoukasho/Synopsis from
DramaWiki:
Kanno Miho stars as a lawyer, Tamako, who investigates the truth and the dark side of the school where various ulterior motives swirl when one of its junior high school student falls to death. Tanihara Shosuke also plays a lawyer who is Tamako's lover, while Ito Atsushi plays a teacher.
# Kanno Miho as Tsumiki Tamako (lawyer)
# Itoh Atsushi as Kachi Kohei (substitute teacher)
# Tanihara Shosuke as Seri Naoyuki (Tamako's boyfriend, lawyer)
# Shida Mirai as Aizawa Asuka (2nd year student)
# Maki Yoko as Oshiro Saki (social studies teacher)
# Fubuki Jun as Amagi Masumi (vice principal)
# Sakai Wakana as Yoshikoshi Nozomi (English language teacher)
# Ohkura Kouji as Toita Atsuhiko (physical education teacher)
# Sato Jiro as Kumazawa Shigeichi (Japanese language teacher)
# Mizushima Hiro as Yahata Daisuke (Math teacher)
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One of the few dramas I'm following this season. The first two episode started off alright, but the third episode had me hooked. It's got some pretty dark elements, but it's fun to watch nonetheless. Itoh still sends off a Densha Otoko vibe from time to time.