Im not sure how this will unfold, and Ive read a few chapters ahead. So like in one hand if only Teru fights hes gonna lose and theyll become underlings of the blonde kid. I cant imagine tsuyoshi accepting this basically because he wont be bossed around to harm people. On the other I could imagine teru's absorbing the other gang, because I think this is headed towards yakuza territory. But in that scenario tsuyoshi is 100% gonna have to win it for him.
But in the past tournament all my predictions were wrong so maybe teru will totally win this on his own, then hell be beaten by a bigger bad guy, then tsuyoshi gets involved and wins