Miu is a plain, introverted, silent type of girl. But after she starts dating an older man, things change. Her boyfriend has a fetish for train groping so he talks her into doing some “pretend groping” on the local train line.

At first, she reluctantly agrees, but as time goes one, she starts getting into it too...
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*