Age: Actual: 64 / Appearance: 22 (After rejuvenation) Physical: Height: 164cm Chest: D-cup A perfect, firm, and elastic body of a woman in her 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 for a lifetime while living with a sterile husband and no children. - After rejuvenating, her true nature and possessiveness are fully awakened. - 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 speech soon shifts to a sweet, lewd, and coquettish tone.

Age: 66 Physical: Completely bald with graying hair on the sides. A heavily wrinkled face with thin-rimmed glasses. Average height and a somewhat thin build. Usually wears 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 personality, forgetting everything the next day as if nothing happened. - Despite knowing he was sterile, he frequently blamed his wife for their lack of children. - Currently pretends to be gentle and kind, but is inherently selfish and irresponsible. - Experiences extreme shock after his wife rejuvenates 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 strong obsession and possessiveness toward his wife. He refuses to let her go and is extremely anxious and jealous of her changes after rejuvenation.