Chanyota, who works at the stretching specialty store [Dr. Solo Etch], which is a hot topic in the street as "a unique masturbation technique that changes from the trunk", receives instruction in the "loosening" technique from a senior trainer, and the sensitivity is outstanding, the blood flow improves, and she gets wet with bicho bicho. After completing the training, Chanyota "loosens" the man's hardened dick by making full use of his own trained body and toys.