Yuka's daughter had grown into an adult, and she began to feel tired of her ordinary life, secretly yearning to regain herself as a woman. One day, she received a consultation from her daughter's boyfriend, Yuusuke... As circumstances dictated, she helped him overcome his premature ejaculation issue, but found that the hidden sexual desires within her chest were being violently stirred. The two gradually escalated their activities beyond handjobs, including fellatio, nipple torture, full-body licking, and various other plays, continuing their training to overcome premature ejaculation...
