Hashiba Sora has fallen from a 4th story window and has lost all of his memories. When Fujimori Sunao comes to his school as his new room mate, Fujimori tells Hashiba that he is called Ran. Fujimori and Hashiba both have a split personality which they developed in their youth. Their split personalities, Yoru and Ran, are deeply in love. Even though it creeps Fujimori and Hashiba out what their other selves do with each other at night, they also start to fall for each other. Because of their relationship, Hashiba Sora finds out a lot of shocking facts about their youth.

A bonus DVD only episode, known as episode 13, where the boys go to a hot spring.

Sunao and I are childhood friends and also college roommates. Due to the Culture Festival, our class decided that we were going to perform "Swan Lake" and made me play the part of the "prince". Sunao, being so slender and delicate to the point that he could be mistaken for a girl, was, of course, chosen to play the role of the "princess". But since he hates to deal with people, he didn't like that idea too much...<br>
A trouble-filled campus boys love story!! Based on a Boys Love game with the name, Sukisho or Sukisyo.<br>
Warning: Shounen-ai!<br><br>
(Aku-tenshi)

Kano Kozuki