Yu tried to bare with it, and even bit her lip to help keep herself calm. However, one glance was all that it would take realize she was probably about into tears anytime now.

Yui kept going and going and then She makes a sudden stop and rubbed Her butt for Her it had turned a nice dark pink. "Almost done Yu."

"Ooh....o-okay...." muttered the fat bottomed woman, who tried to brace herself for the end but looked quite pained at the moment.

"Once it is over You will feel better." She said as She slid Her pannties down Her leg. "Now then Yu please hand Me the brush."

Oh jeez, that dreaded implement. Shakily, she gave it to Yui, looking quite fearful as her bare butt was about to receive quite a thrashing.

Yui looked at Her pink almost red butt and tapped Her bubble butt with the brush and then a hard whack came down followed by what felt like a dozen more.

After the first whack, a howl came from Yu's lips. By the next several? She was openly crying. "OW! OWWWWW! Y-YUIIII!!! I'-I'M SORRRY!!!! I'M SORRRRYYY!!!"

"That is good to hear but We're not done yet Yu so just hold on." She said paddling Her bubble butt quickly.

The heroine sobbed and cried heavily as the brush smashed into her reddening, jiggling mounds. The pain was nigh unbearable for the poor senior.

Yui brought the brush down hard against Her butt and Her sit spots She even gave a few to Her thighs to keep Her still.