Saiki Misaki has been able to see ghosts since she was a kid. Now, working at an S&M club, her spare time goes to sending the spirits off to the other world by having to make them realize they're dead and have to leave. This would supposedly be a little bit easier if you didnt have a background of hardship and loneliness... and a perverted employer.

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.

Wasted from the night before, Kaede wakes up the next morning to find herself at home with a dinosaur she had brought along with her. The two start living together as an odd pair consisting of a typical gal girl and a mute dinosaur going about daily lives. Although not the most experienced paleontologist, Kaede begins to learn more about her new prehistoric roommate through a series of comedic gags and adventures. [Written by MAL Rewrite]

OVA included with special edition of volume 5 of the Mikakunin de Shinkoukei manga. Mashiro and Kobeni share with each other a story from their pasts. Kobeni retells an episode of her childhood with Benio and Nadeshiko while Mashiro describes one of her days back on her home in the mountains.