@DarkShadow
That's if you treat this manhwa as your typical powerscaling shonen. If you remember the setting, he is always going to be an extra, and instead of enjoying his harem life, he's tied down by responsibility. Every other character has being OP as a defining trait. His job is not to be the best, but to play out the scenario towards the good ending he knows from his past. He's not a carry but a support, his growth relies on the growth of the people around him.
Either way, from past chapters (exam arc where he dueled that professor), he is strong enough to stand beside them.