Kaikan Soku Iki Man'in Densha ~Kono Densha wa Kairaku Ochi Chokutsuu Desu~

A man followed a woman onto a train. He pushed her into a corner and touched her body to see how she would react. She didn't resist, so he went further and made her feel pleasure until she climaxed. This happened every day, and eventually, he tried to make her give him oral sex. She initially resisted, but then began to enjoy it. He ejaculated in her mouth just before they arrived at the station, and she swallowed it. The man left the train, and the woman left feeling weak and disoriented.