My stepfather, a retired former chiropractor, has become so sensitive I can't stop trembling...I'm made to cum so much that I die every day, 983 times

"I want to get a massage..." My stepfather suddenly muttered, who has retired and is drowsy every day. Matsuri felt a bit reluctant to her father-in-law, but she asked her to do it because she was a former chiropractor, it would be a good idea to go to the store and be tired of housework. However, my father-in-law wasn't just a chiropractor... With years of experience and skills, Matsuri becomes so sensitive that he can't stop convulsing every time he is touched, and he ends up developing sexual sensations that continue all day long by the lazy old man...