Byodouin wasn't even amazed at the Kintarou vs Oni match, even when he opened TnK!. As Byodouin probably can comfortably return TnK shots like Oni did (assuming he's stronger which is likely having a power from another dimension and he trained his ass of to surpass Oni), Tooyama should put a bit of a fight but I don't think Byodouin will be even fazed. Moreover, the SSS from Byodouin will wreck Tooyama. Byodouin is in the same tier as Oni, but Tooyama even with TnK isn't.
Byodouin wins 6-1