Because her husband passed away, Hijiri had to raise her children alone, she always wanted her daughter to study hard so her husband could be assured in heaven. But then in the last three months, Shoko's score has continuously decreased, this is also the time when she and Kiyoshi love each other. And things get worse when Shoko discovered Kiyoshi was promiscuous with another girl. Since then Shoko no longer focused on studying, she was always sad and depressed. Because Kiyoshi was a Shoko who became like that, Hijiri was determined to punish him by ... fuck him! She called Kiyoshi to the house and pressed him out, riding on him and repeatedly stamping his big buttocks down on his dick mercilessly. She used her cunt to suck the entire sperm of Kiyoshi, forcing him to ejaculate into her cunt from time to time. She forced him to treat Shoko well, otherwise Hijiri would continue to "punish" him. But because it has not been fucked for a long time, Hijiri's sexual desire is released. Although Kiyoshi is still treating Shoko well, she still wants to "punish" him. She was addicted to having sex with her daughter's boyfriend, and both of them constantly rain and rain together whenever possible. Until one day, Shoko returned home and discovered all ...