Infinite Mage

As of ch 63. This is 9/10. Firstly, the art is really good. It doesn’t look awkward and hits every moment.
Secondly, each character feels real. They don’t feel 2 dimensional, but react according to their backstory and feelings. This is really obvious when you look at what happens after.
Third, the power system is incredibly detailed and brain frying. There is a part where the MC talks about how he doesn’t understand people talking the same language and you don’t even know what they are talking about(well I would assume at least).
Fourth, The MC is actually likable. He’s a curious person who lived his life away from politics. He worries about the people he likes and makes sure to repay them. His overpowered nature also feels deserved and worth it. He works hard to close the gap between himself and his classmates. Although I have to say that he seemingly doesn’t feel fatigue at all.

TLDR: 9/10. The best worldbuilding I’ve seen in a while, great art, and a logical story. Only downside is that MC is too unnatural.