Her son Tatsuya had been depressed every day since breaking up with his girlfriend, and mother Hana felt she needed to do something to help him. Though inexperienced and unsure how to approach the situation, Hana was stunned when Tatsuya suddenly confessed something unexpected: "Actually, I'm premature and can't perform well in bed. I don't know what to do." Hana was momentarily speechless—but only for a moment. Determined to solve her son's problem, she devised a bold plan: using her big, soft breasts to help him overcome his premature ejaculation. How will this warmth and tenderness change her son's heart?