The father-in-law helps his daughter-in-law know how to climax

Daughter-in-law Tsumugi Akari is living in unhappy days because her husband is not doing well in their marital relationship. He was quite weak and only lasted a few minutes at a time, making her very bored. Her father-in-law often spies on her and her husband having sex, so he clearly understands the problem here. He had been reading himself for many years and his cock had not been used for a long time, and for a while it could not rise. Until one day he returned to live with his son's family and met his daughter-in-law Tsumugi, when his penis miraculously became erect again. “Hey daughter-in-law, I will satisfy you in a way you have never achieved before!” That's what he told his daughter-in-law in the kitchen. And then…