Yui, a librarian at the library, was commuting by train. I never thought I would meet a pervert on that train... I never thought I would meet an organized pervert group... Taking advantage of her shyness, the lewdness escalated steadily, breaking into her workplace and home, and developing into a rape beyond lewdness. A cruel creampie ring that failed to reach the cry of sorrow. The impregnated slut started to run away The train didn't stop...