OP MC, Isekai, Time Slip, Game, Dungeon, Weak to Strong, Badass, Genius, Tower, Hunter, etc.

Seems interesting

The cover of this webtoon is wrong actually. I was red this in official indonesian webtoon, and it is masterpiece!! The MC is the real trickster and genius in cheating his score at his school. The two MC of this story has vibe like Yagami light and Lawliet in the Death note anime u should read it!!

The MC is a granpa butler of the Duke. But hillariously he regressed back as the young duke itself and lead his territory with his smart asshole personality that make everythings turn into money for his people and territory so funny and cool!

I read the novel version too, BJ Archmage. More into the titles of novel version than the title of the manhwa. Story is common plot and has similarity to Overgeared. But still interesting for me. MC play games to get money for his sick brother and his cute nephew! Ngl, good bro and uncle!