Dreamwalker: Reign of the Heavenly Sovereign! - Chapter 3

A decade ago, the first dungeon gates appeared, but some vanished before they were ever conquered. The MC, a low-rank hunter, awakens the Lost Gate System, granting him access to these forgotten dungeons where legendary monsters and artifacts are trapped. Each completed lost gate grants him absurd power, but also reveals terrifying truths—these dungeons are prisons for ancient beings who want revenge.

All sorts of fantasies, short novels.

Imagination-centered with sci-fi elements.

Light novels, short novels, prose.

A long journey along the endless tracks of life.

Only thought shall free you from loneliness.

Kyle woke up in a land of fantasy and magitech. The usual 'I died and woke up' bullshit, skip all that.

Except he used to be a crime lord, and society here is missing that extra kick.