Okay. Sousuke solos all of fiction just by existing in a fraction of his power. If he stops holding back, nothing will be left except Sousuke. And if GJCH is a meme character, that means he operates underneath meme rules (or the lack thereof) and Sousuke can already beat OCs made by 5 year-olds made just to defeat him. For example, if a 5 year-old were to say "Batman grew to a million feet tall and backflipped over Jupiter then his fists turned into ice cream and he killed Sousuke in one punch," that literally would not work on Sousuke. That's essentially what you're doing here, albeit you are not five and it's a LITTLE more sophisticated than that.