I like this male protagonist

*Available for free on Webtoon*
This is the same author of The Greatest Real Estate Developer!!! As expected, the story is hilarious and entertaining. The concept of turning into the demon king with tragic backstory isn't new but the story isn't cliche so it's not cringey or annoying. The sentimental moments are rare, yet they feel bona fide. A great balance of story telling, humor, and booty cheeks.

*Avaible for free on Webtoon*
MC is betrayed & killed then goes back in time to before everything went to shit. This is your typical overpowered MC but it doesn't feel out of place. I'm actually not a huge fan of the art style but the fighting choreography makes up for it; this has some of the best fighting scenes I've ever read. My one complaint is the women are over sexualized. Breastly boobs all over the place really takes you out of the story...

*Available for free on Webtoon*
....so uh the protagonist in this story is actually a
woman...BUUUUUUT I had to put it on this list because omfg what a rarity to have a female MC in the dungeon category. Maybe I'll update this list to include women.