Are You a Succubus? II ~Forbidden Temptation~

A voice calls Cattleya out of her prayers and into Screwell, a city sealed off from the outside world and run by a priestess named Asmodea. It's a trap. Asmodea challenges the succubus-souled sister to a duel, and the two of them settle into seven days of scheming that has less to do with escape than with seeing who breaks first.

The story plays out as a stretch of days inside a city with no way out, Cattleya and Asmodea circling each other as predator meets predator. Whether lust or salvation ends up running Screwell depends on how those seven days go, and the game gives multiple endings to reflect it. There's no combat system to speak of here, just the push and pull between the two women as it escalates.