Nope, the MC get's stronger as the time goes on. Right now he's the strongest Regular, but in season 1 he was pretty weak (Not his fault thought). It's a classic "weak to strong" kind of story. Not something OP is looking for at least
While he wasn't the strongest in season 1, he wasn't weak either. In fact many people saw that he possessed a power that was special. Not only that but he was also very intelligent (as you can see from his first test in the Tower). So while I know the OP wants a story about a strong character right off the bat, I still recommend Tower of God b/c it certainly contains some of the things he is looking for.