やられ役の牢番が囚われヒロインに優しくしたらシナリオがぶっ壊れてしまったんだが。 (Associated Names)

One day, Lugus, a jail guard working in the Demon Lord’s castle dungeon, realized something terrible: He was reincarnated as a minor villain in an adult game called Prison Heroine, where captured heroines suffer cruel fates. Lugus immediately made a decision: Be kind to the heroines, avoid harming them, and hope they’ll let him go…