Otsuka Keiko, a cute girl with a delicate figure and small breasts, visits the massage parlor! After the massage is over, we move on to a sensual massage. She starts to feel good. She seems to be self-conscious about her small breasts, so when we sell her a free promotional massage that is effective in increasing bust size, she takes the bait! Getting carried away, we start fingering her, and Keiko responds with a blowjob, which feels good! We engage in some intense sex with fast thrusts, and at the end, we inject semen! We hope that her pheromones will have a bust-enhancing effect!