It's All Your Fault, Big Momojiri!

"Momojiri, let me borrow your butt for a bit, okay?"

The class delinquent is completely obsessed with... the uptight honor student?! The always-serious class president, Momojiri, is at his wits' end with the class troublemaker, Osaka. He's always late, never turns in assignments, and every time he's scolded, he teases, "Come on, don't be so angry. You're ruining that cute face..." Determined to finally teach him a lesson, Momojiri chases after Osaka... only to get his butt stuck in a window?! Self-conscious about his big butt, Momojiri panics in embarrassment. But Osaka, seemingly turned on, starts teasing and massaging him anyway. "It's your fault for getting your butt stuck in front of a guy with bad intentions."

(Source: Coolmic)