脅淫ノ電鎖 ～差し出し人不明の狂喝通知～

One day, the protagonist receives a message. Which happens to reveal the secrets of 3 girls in his class and with an order to blackmail them too. While thinking that he can freely do anything to them, his desire rises.

"Indecency with teacher", "Shoplifting" and "Bullying". When their weakness is exposed, they will have no choice but to surrender to him. Following his orders, he will threaten them and violate their body.

[Translated from Official Site]