Series of 4 volumes and a collection published officially jn English (links to English version for purchase below)

The Shame Train 1 - I Was Molested Next to My Crush (Irodori) Maezono's crush moved to a house near hers, so from now on they'll be riding the train to school together. It's her lucky day! Until she gets molested in front of him on that very train, that is.

The Shame Train 2 - Next Target: The College-Bound Girl (Irodori) The Shame Train series continues! Manami just wanted to do some last-minute studying for her T-Uni entrance exams. (Un?)Luckily for her, the sketchy guy on the train was more than willing to help her cram!

The Shame Train 3 - Milking the Housewife (Irodori) When busty housewife Sanae boards the train to go pick her husband up at the airport, she finds herself getting a completely different type of ride! Hopefully Sanae can satisfy a group of horny salarymen with her body, or she'll never be able to see her husband. Watch your step as you board the train and stay behind the white lines... of breast milk.

The Shame Train 4: Satisfying My Boyfriend's Fetish (Irodori) Ririka’s boyfriend has a habit of making unreasonable requests, but she never expected him to ask her to get molested. Reluctantly, she boards a train and quickly finds herself fondled by multiple men. “If things go too far, my boyfriend will come and save me, won’t he…?”

The Shame Train Collection (Irodori) A student getting her lucky chance to ride to school next to her crush. Another college student just trying to get some last minute studying in on the way to class. A lactating housewife traveling to see her husband. And a busty girlfriend whose boyfriend doesn't have her best interests at heart. The one thing they all have in common? They're about to take a ride on the shame train. Destination: molestation.