Female investigator Rei Aino pursues the disappearance of serial investigators! - The rumored shadow of the Black Lion Society is behind the mysterious disappearances of seniors and classmates! - ! - Based on information from a young detective, he disobeys his superior's order to prohibit independent investigation and enters the enemy's hideout... but it turns out to be a trap! - ! - Rei Aino, a proud narcotics investigator, is drugged and filmed as she humiliates herself... She just can't stop! - It never ends! - Anal attack! - Reason collapses! - Devil's torture!