Mynocthia: Corrupted Kingdom

You wake up in Mynocthia with a power nobody asked for: the ability to purify whatever the kingdom's mysterious corruption has twisted into monstrous form. The tone stays playful even as the setup is fairly grim.

An unknown dark force has infected the races of Mynocthia, and someone with your particular gift is apparently rare enough to matter. The story follows your attempt to push back that corruption, pick up allies along the way, and figure out what's actually causing it.

Purifying corrupted monster girls means turn-based fights against bosses and mini-bosses, working through side quests, and occasionally finding that the cure looks a lot like temptation rather than a spell. Puzzle areas break up the combat, and the cast leans toward big, furry, and monstrous rather than conventional, with a harem forming as you go.