Collection of stories: 1. Suki Suki! Onee-chan (Love You! Onee-chan) 2. Suki Suki! Onii-chan (Love You! Onii-chan) 3. Risou no Battery (Ideal Battery) 4. Mawatte! Sawatte! Karande ne! (Twist! Touch! Ent...

Shinji Kanou is madly in love with his older married neighbour, Yumi Mishima. One day Yumi suddenly comes onto Shinji leaving him confused. The next day, he meets Yumi with her single twin sister, Nami.

Yashiro is the young leader of Shinseikai and the president of the Shinseikai Enterprise, but like so many powerful men, he leads a double life as a deviant and a masochist. Chikara Doumeki comes to work as ...