boy-next-door type. so sweet, but also can be serious. he's the best friend that never gets the girl, though he'd do anything for her. he's very smart and shy. If you get to know him, you know he likes you.
"Hey, Pengyu just got rejected again."
"For real? He bought her chocolate!"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi