Ookami wa Nemuranai

On a fervent quest to become stronger: the heroic tales of the adventurer Lecan start! The One-Eyed Wolf Lecan, jumped into a black hole he found in the confines of a labyrinth, falling into another world. No matter the world he is in, the adventurer Lecan doesn't lose his way. Seeking strength, challenging labyrinths, and defeating formidable foes: this is the stout fantasy!

(Source: Kadokawa, translated)