Kuro no Kyoushitsu
Japanese title: 黒の教室
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: May 29, 2015 to Jul 29, 2016
Duration: 31 min per ep
Rating: Rx - Hentai
Studios: PoRO
Genres: Hentai

Based on the adult game by Bishop.