The train made an emergency stop, and the inside of the car suddenly became dark. The power went out, the doors were locked, and they were trapped inside... with no way to escape. The hot and humid, unusual situation drove the men crazy. Even the homeroom teacher, who was supposed to protect Yui from being molested on the train to school, lost all sense of reason when he saw his student wetting herself. He kissed her trembling lips, hugged her, licked her, and raped her... He was surrounded by men who were tempted, and he creampied her again and again! He sucked on many dicks, and accepted the semen with his body and pussy! Covered in sperm and men's desires, Yui's body eventually fell into depravity.