"Nacht-sama is quitting being the demon king!" is an RPG game produced by 地蔵サバイバルナイト and published by Hanabi games.

Demon King Nacht's castle has been attacked! In order to find out who was behind the attack, Nacht used her ability to go back in time.
After one investigation, Nahat found that things were not simple. She decided to slowly start building her prestige...