It Was A Delicious Body. Lotus Echo

The assisted living facility "Smile Life Home." A homey care facility with many male residents. Ren, a young and cute caregiver, starts working there. She diligently takes care of the elderly, but the old men begin having lewd fantasies about her diligent figure. They exploit a small mistake, threatening her with "violation of medical practice." The naive girl is shaken by their words and ends up having her young body toyed with by the geezers. The vulgar and obscene acts of the old men, who have given up on their short remaining lives, escalate day by day, and Ren's pitiful life of being constantly raped continues today as well.