The Nurses #7 (Pixiv Fanbox)

The little sex slave bounced incessantly on Nurse Alice's strapon, getting both of them closer and closer to orgasm. The strapon was specially designed to stimulate its wearer through clitoral vibrations and Alice could tell that Kaori was just as close as her to orgasming....but she wanted to punish her a little bit first. Gripping her waist tightly, Alice lifted her slave upwards and tilted her backwards as she unlatched her hands from her collar, letting Kaori's pussy pulse and moisten at the sudden emptiness. She scooted her butt upwards a bit and pulled the slave down hard...impaling her anus on the dildo already lubed with her own pussy juice.

Kaori squealed (or...tried to at least, with the dildo gag still in her mouth) and arched her back at the sudden anal intrusion. She was a good slave who knew her place though...and was soon pounding her little nurse friend who tickled her exposed nipples...