Self-improvement is the name of the game in Nazarick with the exception of Ainz-sama, who couldn t possibly be more perfect than heal ready is! With the floor guardians shaping up their acts to wind back the time on Demiurge s doomsday clock, Narberal practicing how not to insult every human she meets, and the Supreme Beings figuring out how to play mahjong from first principles, everyone s trying their best to live their worst, evilest lives in another always-inspirational volume of Overlord: The Undead King Oh!