エレベーターガールのお姉さんにヌイてもらいました。

The main character is a virgin boy who goes to the department store to see his favorite elevator girl.

One day, the elevator happened to stop because of sudden black out.
He was happy, but because of the shock his dick was erecting hard.

By looking at this, the elevator girl gives him an unbelievable suggestion...

[From DLsite English]