Celebrate!! Hinako Suga's exclusive debut in her first Takara Eizo production! At 38 years old, Hinako has been married for six years but struggles with infertility. Though she and her husband maintain a healthy relationship and actively enjoy sex during her fertile days, pregnancy never occurs. One day, she learns her father-in-law has six children of his own—and suddenly feels an overwhelming, uncontrollable urge. Despite knowing it defies all reason, driven solely by her desperate desire for a child, she asks her father-in-law to provide his sperm. Eager to secure an heir, he calmly agrees to her shocking request. Though her mind screams that this is wrong, she cannot suppress the intense pleasure that follows each encounter. An impulsive, taboo relationship unfolds between Hinako and her father-in-law—what will their final decision be?