何者かに殺害された弟…。その犯人を突き止めるため、自ら捜査官になった有紀。ある連続猟奇殺●事件の捜査線上に浮かび上がった製薬会社「BLOSSOM」表向きは製薬会社、しかし裏では人間の意志を制御する装置の研究をしているとの情報を掴み、研究員として潜入捜査にあたっていた有紀だったが正体を見破られ人格すらも侵食する‘快楽洗脳実験’の被験体へと堕とされていく…。

Yuki's younger brother was murdered by an unknown assailant… To find the killer, Yuki becomes an investigator herself. In the course of a series of bizarre murders, the pharmaceutical company "BLOSSOM" comes under suspicion. On the surface, it's a pharmaceutical company, but Yuki has received information that it is secretly researching a device that controls human will. Yuki goes undercover as a researcher, but her true identity is discovered, and she is ****** to become a test subject in a 'pleasure brainwashing experiment' that even corrupts her personality…