4k UHD version, part 2 out of 2 of:

... continued from part 1.

After calming down for a l*ttle (and loosening the crotch rope), it is time for another test: a plastic bag loosely over her head. NanaYamiChan (the girl) finds that if she pulls in her breath too fast it will stick to her face and stop the air, so she have to breathe very controlled. Extra hard as she cannot help m*sturbate herself against the crotch rope. After several minutes, Master KindBond (the guy) throws a wet towel on top of the plastic, making it even harder.

He then removes her gag, and they talk for a l*ttle while about how she experienced the breath control until now, and what she liked the most. We learn she have had practice on her own!

She is still excited and ready for more, so he replaces the crotch rope with a vibrator. Adding a wet towel over her head he again leaves her alone to enjoy her helplessness and body shaking *rgasms. After a while he comes in to do more breath control with his hands, then leaving her alone again with her face visible this time, as the vibrator continues doing its magic.

Finally, KindBond thinks she have had enough and stops the vibrator, and does a bit of aftercare and kissing (that turns into humping her a bit, before biting her p*ssy), and starts untying her legs.

She takes her legs up over her head to stretch them, but that looks like a new lovely b*ndage position to him, so he quickly ties her stuck like that, leaving her butt now open to a quick spanking. And her feet is sticking up, perfect for another tickling!

Satisfied that he has used her well enough for today, he finally unties her c*mpletely. Followed by a bit of aftercare and more talking about how she experienced the scene.

Full movie is 95 minutes, with the main action lasting 75 minutes, of which 43 minutes are in part 2.

Note: This is not roleplay - it is a negotiated scene that both enjoy, during which they figure out which kind of breath play they prefer most. Other materials or scenarios might work differently and be more scary.

4k UHD part 2: Girl in fun, spreadeagle tied to bed