Here is Greenwood (2008)
Set at the all-boys school Rokuto Academy, the story revolves around Hasukawa Kazuya a late arrival to the unusual Greenwood Dormitory, a former insane asylum.
Kazuya Hasukawa
Shinobu Tezuka
Shun Kisaragi
Sumire Hasukawa
Miya Igarashi
Hideya Sakaguchi