[Kazu-kun]

I agree with 7Th.

Spoiler for Yuna's fight:

Yoshida won't have Yuna lose, specially not against a character who has lower main-character status than her, not a chance.

And think about it. We saw Kouga's first fight but we didn't see Souma's, and when they fought against each other Kouga won.... now apply that to Yuna and Ryuhou case and... well, it's pretty self-explanatory.