"He's toootally my type...!!!" Mizuki is a good-looking and hard-working businessman. He's also a closeted gay man! He unexpectedly becomes flatmates with his younger cousin Ritsu, whom he hasn't seen for ten years. However, it turns out that Ritsu has grown up to be the guy of his dreams! Mizuki tries his best not to do anything weird while having the guy he's into right in front of his eyes, but he ends up putting on the persona of a playboy in order to make himself seem more mature, even though he's still a virgin... This is a messy love story of a handsome and naïve university student and a pretty boy virgin who pretends to be a playboy!