I see she will be a catalyst for Seo to move past the lack of confidence that he isn't good enough to date someone, Ijichi and Amane in particular. It didn't take long for the girls to straighten him out when he looked down on himself for just being their friend, but looks like when it comes to an actual relationship, its a lot more complicated. At least she is less annoying than her introductory chapter, and almost feels normal for her to associate with Seo on the daily basis.
Also, plus points for Seo for being willing to stick around after Amane and Ijichi confronted Ushio, but he's a Krillin among a Goku and Vegeta against Majin Buu.