The piston stops every time I get upset.

Yui is always cheerful and fluffy, and has a gentle smile. But that's not possible, today I'm giving you a thorough pleasure, but I will never let you climax. The moment the switch is turned on completely due to the intense thrust and is about to come, the piston stops. Even if he asks you to insert it next, he won't be able to insert it until he has a sympathetic expression on his face. Just as I started screaming and getting angry because I wanted to climax, I finally threw my glans into my weakness and cried and she was happy.