JK to Inkou Kyoushi 4
Japanese title: JKと淫行教師4
Type: OVA
Episodes: 2
Source: Visual novel
Genres: Hentai
Studios: PoRO
Duration: 29 min per ep
Rating: Rx - Hentai

Takashi is a teacher. One day, two new students come to his class, Shizuka and Satsuki. Shizuka is friendly and Satsuki is quiet. Some days later the vice-principal suddenly orders Takashi to take care of them, and it turns out that Shizuka is actually selfish and egoistic...