I woke up in an unknown forest. It seems like this place is a fantasy world where strange-looking beast run rampant. And just like in a game, I seem to be able to check mine and my enemies ability. Let’s hunt monsters and gather titles in order on level up and evolve into a higher dragon! And I heard a mysterious voice in my head, “Let’s aim to be the strongest!”

(Source: MU)

After Dean, a third rate adventurer, got surrounded by demonic beasts in the demonic labyrinth, he fled to a place where he found the strongest demon who devours power: The demon-fed sword Belzera, born to the Gluttony Empress Belzebuth. After obtaining such unexpected power, he once again aims to become a first rate adventurer he looked up to, and delves deeper into the labyrinth. However...

(Source: MangaDex)