A doll-like device for personal control and complete processing is being sold. The facility's grandparents, the doting caregivers who treat it like a grandson, and Yuna Ogura (START-129)

Yuna, a first-year nursing care worker at the facility, is treated like a granddaughter. Besides the staff's trust, she possesses twice the energy and responsibility of others, showcasing her true self at work. However, she also has another side: dominated by her boss, Hashimoto, she becomes a sex-processing pet within the facility. Hashimoto uses social media to turn Yuna into a virtual sex partner for his clients, attempting to profit from it…