This is a good, maybe even unique, chance for Emi to experience a sort of hybrid between Yuusei and Kuon Ryuuou. I'm sure she could later watch a bunch of his matches, seeing the pure Kuon Ryuuou, and she naturally has spent a bunch of time with Yuusei, but since this is a training camp where Yuusei needs to be the king of shogi for the sake of the students. But he can also spend a little bit of time with Emi, so he won't be fully Kuon Ryuuou. Since Yuusei has had troubles being passionate about shogi anymore, rather considering it a job, it will further enforce the switch between the roles when in Emi's company, because he doesn't want to be the celebrity when with her.