Sutea grew up with Koushi Nagumo, and the two have been close since childhood. She's got genuine feelings for him—the kind where she worries constantly but won't admit it, playing it cool instead.
What's notable about Sutea is that she's extremely heat-sensitive and really dislikes being touched because of it. When she first opened up to young Koushi about this, he was sweet enough to cool his hands with ice just so he could touch her without making her uncomfortable. It's the kind of detail that says a lot about both of them.
Content compiled by AnimeList.moe from publicly available sources.
