Shun watches the end of the match from a more reasonable distance, so he can overhear how things are going properly. He's not surprised it ends up turning in her favour - people who play like the teens do don't tend to respond well to unexpected upsets to the way the deck is supposed to play. It's the difference between someone who's playing a good deck that they really know and put work into and someone who's playing a good deck just because they saw someone else doing it.

The fact that the guy tries to make a judge call on card legality speaks enough for how little he actually reads up on the game he's supposedly good at, and the rest of the game proceeds about how Shun expects. And so they head into the next round - unfortunately, it appears that Shun's intended opponent had to run out for something and doesn't come back within the first match time, leading to that being called in his favour after ten minutes. Another ten and he gets the round, but he's planning to spend that time watching over the game between the kid and the bully. He figures what Ginia chooses to do in going up against the kid is her business, but he doesn't want the one up against the bully losing her nerve.

It doesn't seem like a problem initially, though. The girl seems quite ready to show the bully what she's learnt since they last fought, and the match gets on a roll promptly, both sides starting strong.