Takaki lives a peaceful school life. There is also his cousin, Haruki, at his school. She is a teacher of biology. One day, Haruki tells Takaki and Rei, his classmate, to assist her experiment. However, the experiment fails and Takaki accidentally gets a special power that he can control other's mind. At the same time, an odd group is formed. Nobody knows what they do, but there is a rumor that participants can become happy. Also, participants are all female students. Saori tries to disclose the secret and she meets Takaki along the way.... Accident, necessity, control, compulsion, and.... [From ErogeShop]

Yuuto Kiryuu is a vindictive asshole still fuming over Miono, a girl who spurned his (perverted) advances years ago. One day, he's contacted by a mysterious person (or group?), getting a little amount of a brainwashing drug he's supposed to test on Miono and her female relatives. Wasting no time on useless doubts about the reasons and the nature of this evil experiment, Yuuto immediately begins his brainwashing rampage, but he will discover soon that his mysterious 'benefactor(s)' have withheld crucial information from him...

Tatsuhiro Tachibana (a freelancer for the yakuza) is perennially in search of the big score, but usually gets scorn and derision instead (especially from women). However, his luck finally changes after receiving a visit from Alexandra, his niece from overseas, when he suddenly gains the power to control and brainwash minds to his pleasure. Lacking scruples, Tatsuhiro immediately starts playing with the minds of other people (especially women), but is totally unaware that the dear Alexandra (the hidden source of his power) is not really his niece, or even human...

Yoshimine Yuu is a student who hides a powerful power of mind control behind his innocent behavior. At first he's just using his power to play around with girls, but a mysterious organization distributes a weird contact lens named "blue eye" that allow the user to manipulate somebody. A mysterious girl fights this organization, and Yoshimine eventually gets caught in the battle between the two.

The main character, Hajime, has a somewhat uneventful life, until he catch the eye of Haruki Ayakawa, another student, a bit on the crazy side, that will throw him in the world of mind-controlling. Unless he makes a wrong choice that bring him back to a boring life, he will go further and further in this world.