Rejected way too many times by good-looking (and unattainable) guys, shy Riiko Izawa goes online and signs up for a free trial of a mysterious Nightly Lover figure. The very next day, a cute naked guy is delivered to her door, and he wants to be her boyfriend!Has Riiko died and gone to heaven? The cute guy turns out to be sweet, smart, a great cook, and lots more. And he looks like a million bucks, which is what he's going to cost Riiko if she doesn't return him in time...

While out on a date with Night, Riiko meets Toshiki, a boy who looks like her first crush from elementary school. Even though she's with Night, Toshiki seizes the opportunity to steal a kiss from Riiko...