He has no reason to be THIS good, when he clearly states himself that he has no freaking clue about that game, yet for some reason he's alredy god tier when he joins.

When it makes sense for a character to be overpowered it's ok, like Alucard from Hellsing. He's freaking Dracula, got experimented on by god knows how long until they had to place limiters on his powers so he dosn't go all out all the time, which makes way more sense.

I still remenber him questioning how he would be able to perform a proper investigation while competing with top players who played for a long time. He forgets he's like a self insert mary sue of ultimate power for no freaking reason.