"If you do something like that... you're gonna flip my switch, you know?" Nonoka is a college student dreaming of a heart-fluttering romance. She moves from the countryside to Tokyo to live with her older brother, who is a professional comedian. But when she arrives, she finds her brother's partner, Watarase—a man famous for being a total scumbag—living there too! He loves girls and has no sense of personal space; he's a dangerous man! Or so she thought...?! He's a player who's always hanging out with women, but— Is he falling head over heels for Guest? Expect plenty of jealousy.