It should be pointed out that Yuu, who's apparently approximately the same skill as Kuro, got first place in both of her matches immediately following Kuro's. Given that Yuu was motivated by a desire to win back Kuro's points in return for Kuro protecting her over the years, one has to wonder how she'd react to people bashing her sister.
At this rate, I don't think Yuuki, who has a similar track record in vanguard matches, stands a chance against Teru- Satoha seems to be the only possible vanguard in the finals who does.