Isekai Saikyou no Daimaou, Tensei Shi Boukensha ni Naru

Chapter 11.2
Chapter 11.1
Chapter 12: Lucifer-sama's Preparation
Chapter 11.1
Chapter 12: Lucifer-sama's Preparation
Lucifer, the greatest demon lord, who saved the demon race in the war with gods, is reincarnated as a normal adventurer.