Kyouhaku: Owaranai Ashita
English title: The Blackmail: Tomorrow Never Ends
Japanese title: 脅迫～終わらない明日～
Type: OVA
Episodes: 3
Source: Visual novel
Genres: Hentai
Studios: Production D.M.H
Producers: Pink Pineapple
Duration: 28 min per ep
Rating: Rx - Hentai

Yumiko is a school girl wanting revenge for her best friend recording her being gang-raped. So now she aims to rape every single friend her former best friend ever had.

(Source: ANN)