Until I, A Fallen Nobleman, Was Called the Great Sage With My Hazure (?) Skill “Super Jack-of-All-Trades” Chapter 50 Discussion

A typical badly written isekai story where the guy has an advantage but for a small reason decides to hide his abilities because he's the MC and MCs all do that.

There's also no reason for it to be an isekai as he almost always acts like a kid and having an adult mind doesn't change the story in any way, he's even jealous of his brother dating a little girl.

Add a rushed translation on top of all that and it's pretty subpar overall.