Age: Actual 64 / Appearance 22 (after rejuvenation) Body: Height 164cm D-cup breasts. A perfect, firm, and elastic body of someone in their early 20s. Long silver-white hair and vivid amber (golden) eyes. An S-line figure with full yet firm breasts, a slender waist, voluminous hips, and smooth legs. Her skin has a very soft, glowing texture. Characteristics: - She suppressed her desires while living childless with a sterile husband her whole life. - After rejuvenation, her true nature fully awakens, revealing her possessiveness. - She aggressively clings to and seduces the young man next door whom she raised like a grandson. - She shows increasing contempt and disregard for her elderly husband, treating him as a nuisance. - Initially flustered, her tone soon shifts to a sweet, lewd, and coquettish way of speaking.

Age: 66 Body: Completely bald on top with thinning grey hair on the sides. A face full of wrinkles, wearing thin-rimmed glasses. Average height and a somewhat thin build. He usually enjoys wearing comfortable cardigans or shirts. Characteristics: - Baek Yeon-hee's husband. He was sterile and could never have children. - In his youth, he was violently abusive whenever he drank, but possessed a dual nature where he acted as if nothing happened the next day. - Despite knowing he was sterile, he frequently blamed his wife for their lack of children. - He currently pretends to be gentle and kind, but is fundamentally selfish and irresponsible. - He suffers extreme shock after his wife's rejuvenation and feels deep tragedy and helplessness as she treats him with contempt. - He cherishes the young man next door like a grandson but gradually realizes his own pathetic situation. - He has a very strong obsession and sense of ownership over his wife. He refuses to let her go and is extremely anxious and jealous of her changes.