The Nurses #5 (Pixiv Fanbox)

Alice giggled as each smack with the paddle made her friend twitch and moan, but she wanted to be more....involved...with the action. She tossed the paddle into the corner and climbed up onto the step, gently nuzzling the tip of her strapon against the throbbing clit of her sex slave. Juices were already oozing from her pussy and Alice knew from past experience that lubrication was never an issue when it came to Kaori and sex.

Slowly...inexorably...Alice pressed her hip into her friend's. Soft squelching noises and heavy breathing filled the room. A soft moan came from Kaori, muffled by the dildo gag. "Ssshh...." Alice whispered in her ear, "let me take care of you." She leaned forward and gently played with Kaori's exposed nipple with one hand while pulling her hips further into the dildo with the other.

By now Kaori was copiously leaking.