Dungeons Adventure

I can finally rest in peace. "Eh? Eh? Ehh?! How can it be?" The man woke up in an unfamiliar world where dungeons are most of the people's source of income or maybe just for pure excitement or maybe for power. He is in a body of a 13 years old boy named Lou Yi when he woke up having to make a life for himself. Once a person turns 18, they are given an opportunity to enter the dungeon or they could choose being a merchant or farmer. What will the man do with this second chance given to him?