Ore dake Level Up na Ken (Solo Levelling)

Ore dake Level Up na Ken, also known as Solo Levelling, is an anime I picked up a few months ago that thoroughly engaged me. Both Season 1 and Season 2. The story follows the growth of E-rank hunter Sung Jin-Woo from the world's weakest hunter to heights untold.
In a world where gates to dungeons appear randomly, and hunters are the gifted humans who fight the monsters in those dungeons to close the gates and prevent said monsters from coming out into the real world, Sung Jin-Woo struggles to make a living as an E-rank hunter.
For him, every battle is life-threatening, and every dungeon a gamble. That is, until he and a makeshift party stumble upon a previously unknown dungeon area. The trials the party undergoes there and the miraculous survival of its weakest member begin the tale of Sung Jin-Woo's Levelling Up. A feat previously thought impossible.