Reika stands out with her flashy outfit and tanned skin. But she is not just another dark-skinned gyaru—beneath her bold appearance lies a fragile, timid personality. When violently raped in an abandoned warehouse, she struggles fiercely at first, but once forced into prolonged ejaculation denial, a masochistic expression appears on her face. During outdoor park training sex, she finally shows signs of submission. To further mold her into a compliant sex slave, she is made to serve as a human toilet in a public restroom. Reika's expressions make it clear—she is a true masochist.