The protagonist.
He's a bit of a jokester, and doesn't take things too seriously. Due to being chronically sleep-deprived, he always squints and has bags under his eyes.
Due to a night with Kirame that gets misinterpreted as a one-night stand, and Yua suddenly accepting his confession after always ignoring him, he finds himself in the position of a two-timing douchebag.
Convincing himself it was all out of control, he now has to figure out what he's going to do about the situation.