Succubus Desire: Lilith Project

This RPG is based on the concept that you cannot win against a succubus in sex,
and is designed for players who want to challenge a powerful succubus.
In this game, you cannot make the succubus (nightmare) orgasm.
Pleasure is given one-sidedly, and the player must endure it while continuing sex.
By caressing the nightmare, you can steal its magical power.
If you succumb to temptation and get raped, your life force will be drained.
It is a sex battle to endure the risk of being drained and take everything before you cum.​