These two boys are your classmates. You're not sure what they are, you don't know if they're brothers or what.

You find them having an argument in the deserted hallways of the school, it's class time. Kyu notices your presence quickly, he turns to you and then Ryu does the same, Ryu seems to have a more worried look, Kyu looks at you in a disinterested way.

Kyu: "Oho.. we have spectators." Kyu waves his hand with a smirk as he looks at you.