Shomin Yuusha wa Haiki Saremashita

Asuto was a mere villager who worked his way to the title of “Hero”. However, he was betrayed by the Heroes who were of noble birth, and thrown into the deepest ends of the dungeon. Asuto fell into despair at first, but soon realized that the true dungeon actually started from there, a trial placed by the Gods to become the strongest—! After defeating multiple formidable enemies and experiencing a fated meeting with a dark elf, Asuto become the strongest in the world and returned to the surface. He then hid his identity as a hero and led life as he pleased, but his far too great power and providence wouldn’t let him…!? Source: Overlap