Level 0 no Maou-sama, Isekai de Boukensha wo Hajimemasu

A former Demon Lord named Ishuto was defeated by heroes but was reborn in a new world with all his abilities intact. He decides to rebuild his power and influence in this unfamiliar realm. An experienced adventurer named Airis is impressed by his strength and agrees to guide him into an adventurer training institution. Due to his extraordinary capabilities, Ishuto completes the training on the first day and is given the unique rank of "level 0." His unmatched abilities make him a standout in this world.

Traduzione in corso — testo originale in inglese.