This was a collaboration artwork with Yui (user/4338191 »). Which was planned for a long time now...
Yui drew latex, binds and the toys and I drew the faces, hair, clothing, effects and the sketch. Had quite fun with it.

STORY (ストーリー) :
Ayumi and Yui, stuck in bondage by one of their captors sitting in a metro, had to arrive at a specific location and specific time in order to get free of their tight binds...
But right as the metro was approaching their selected station, the vibes activated, going full throttle. Ayumi and Yui, unable to gather strength in their legs could only helplessly squirm and moan, watching the metro doors close right before them in despair...
Already pressed on time, missing their station only confirmed their failure and they would have to try again tomorrow, same time same place...

EXTRA TEXT ON IMAGES (画像内のテキスト):
Red haired girl on the left named Yui: I can't get up!
Blue haired girl on the right named Ayumi: These vibrations are too much!
Text in the rectangle on the bottom: Dear passengers! The train (subway) will be departing shortly!

Timelapse is on my FANBOX, cuz Pixiv doesn't allow MP4 files