getting kicked in the balls = punish
getting a footjob from yui = reward

She'll definitely get used to it.

No, no, Yui, you're doing it wrong.
No.
Stop.
Yui.
No. No.

Kora-Toki said:

No, no, Yui, you're doing it wrong.
No.
Stop.
Yui.
No. No.

You mean with this tone of voice? https://www.youtube.com/watch?v=_Uc-LIr4wD8

jasokun said:

getting kicked in the balls = punish
getting a footjob from yui = reward

both sound very nice