Isekai Saikyou no Daimaou, Tensei Shi Boukensha ni Naru

Chapter 16.2
Chapter 16.1: The Choice of the Demon King
Chapter 17
Chapter 16.1: The Choice of the Demon King
Chapter 17
Lucifer, the greatest demon lord, who saved the demon race in the war with gods, is reincarnated as a normal adventurer.