"Unrequited love is like a Metro that runs underground."

College student Nozomi has always been secretly in love with her senpai Shusuke. Unfortunately, he is already in a blissful relationship with Moe-san, a beauty so lovely and kind-hearted that Nozomi can't even bring herself to resent her.
One day, her one-sided love is discovered by none other than Atsushi, Moe-san's brother, and that's where Nozomi's troubles begin...