I want to be completely filled with semen... A shy and reserved girl who had never even had any experience with men until just six months ago suddenly develops a lewd talent, and when she gulps down the milky white lust juices that are released from the Kokoro, her innocent expression changes to one of ecstasy as she goes crazy in a trance-like state. A naive girl with an outrageous perverted desire volunteers to be a semen slave in this four-part series.