So you're a high-school student and love your teacher. Why? Well, big boobs, nice ass, etc. However, your “sister” loves you. Almost seems like a story with no end. Problems arise as expected and such, but what if your teacher that you love and your sister’s soul interchanged and switched bodies. Which one will you love now?

Eitaro is hooked to the erotic chats… Someone steals Sakuko's lingerie… Ai is determined to lose her virginity… Everybody is hooked on love… or is it to sex?! An erotic manga by Kyo Hatsuki following the trials and sexual triumphs of the main character. The story travels from - "Will he ever get laid?" to - "Will he ever get a steady girlfriend?" to - "Will he ever learn to keep it in his pants?!"

Tokano Yuuka has been going out with her boyfriend Yazaki Norikazu for a little over a year now but doesn’t get to see him every day since he works in a different city as a newspaper reporter. Although they are apart, they love each other and things are going well. Norikazu gets an opportunity to interview Saeki Keito, the lead singer of the most popular band in Japan, Zero Sum Game, because they were good friends in high school. Being a fan of the band, Yuuka gets to tag along. However, Yuuka gets raped by members of the band while Keito distracts Norikazu elsewhere. It seems that Keito is infatuated with Norikazu and wants Yuuka out of the way. After the traumatic event, the relationship between the three becomes extremely complicated.

Teranouchi Bon is an average teenager except for one thing: his imagination. As a virgin, he uses his wild and vivid imagination and envisions himself in a sexual relationship with Ichihara Ibuki, one of the heroines from one of his favorite TV shows from when he was a child. Bon finds out that one of his new schoolmates is the beautiful Momose Koharu, who he used to be childhood friends with, and his life soon becomes chaotic. But just when Bon thought life could not get crazier, his world is turned upside down when he learns that the new school nurse is none other than Mitsuba Touko, the actress who played Ichihara Ibuki, his imaginary lover.