Yuuma was forced to take a hiatus from school due to unspecified circumstances that left him hospitalized. After a year apart, he finally reunites with Yuuri, his breathtakingly beautiful twin sister, and they start living together. Nonetheless, Yuuma harbors a secret that he can never share with her - he's head over heels for his own sister... As the truth inevitably comes to light, the love becomes an obsession that threatens to swallow him whole... [Translated and edited from [url=http://www.omega-star.jp/biman4html/story.html/]the official site[/url]]

The protagonist, Kanzaki Akihito, was once a cheerful boy. Only having grown up, he was now with heart problems; friends of old were friends no more; and more often than not, he was not seen attending school. His mind was darkened mostly by his childhood friend and first love Sawatari Shizuku, and the fact that she had been unreachable for a while now. He felt as if she had betrayed him. Gray days pass by, and once more Shizuku appears before Akihito... Again the story starts moving, and to a direction not one of them had expected... [Translated from [url=http://www.omega-star.jp/biman2html/story.html]The Official Website[/url]]

In the middle of the mountains stands an isolated, rural hot springs inn. There works the beautiful waitress, Inamori Haru. Kamijou Souta, the lover of Haru, secretly pays a visit to the inn in order to surprise her... This is the story of a night of passionate love woven by a foolish couple of adults who have fallen in love... [Translated from the [url=http://omega-star.jp/bimanharuhtml/story.html]homepage's official synopsis[/url]]