VAGU-285 - On the last train, the wife's sister-in-law was exposing her underwear and began to seduce me when she noticed I was aroused. Hikari Ba

Hikaru, who has lived supporting each other with his younger sister. He decides to leave home because his sister has found someone special, but is persuaded to stay and now lives happily with his sister and her husband. One day, after a series of overtime workdays, he dozes off on the train due to the swaying motion. He wakes up to the sound of rough breathing and sees his sister's husband peeking under her skirt and stimulating his penis...