Place your bets, what is he missing?
Take in consideration that his build (and probably stamina) is not very different from Ryuki's and he's already training to have a tough body.
My guess is that he's unconsciously holding back a lot of power in order to not cripple his opponents, and he needs to be more like Garou from Onepunch Man, specially if he intents to participate in the Kengan matches, I mean, he could do well in public fights, but underground is different! but he comes from a normal Dojo and he never risked his life to fight.