My Friend's Mother First Thrilling Experience (2014)

Susumu, a good young man from the countryside, comes to Tokyo to attend a school for chiropractors, relying on his childhood friend Sasaki Kazuto. Kazuto's mother, Junko, remembers Susumu well from his childhood and is happy to let him stay with her. One day, Susumu gives Junko a massage to repay her kindness...