エスカレイション！/ Escalation!

A visual novel with 3D model animation featuring BDSM (Bondage, Domination, Sadism, and Masochism).

The protagonist has a quite masochistic propensity. One day, he worked up the courage and confessed that he'd like to try being dominated. But just as he was busy worrying about Her being disgusted with him for asking such a thing, the response was motivated one. It didn't take long before they started BDSM sessions. After they opened their hearts, domination and submissiveness has naturally been made. The relationship gets gradually escalated... * This game contains hard BDSM sessions. Please play BDSM always with safety in your mind.