おちんちんを棘付きの貞操帯で包まれて、勃起さえしなければ痛い思いをしなくて済むのに勃起してしまう、そしてその痛みに泣きながらもますますオチンチンをおっきくしてしまう悲しきマゾの性・・・!
Encased in a spiked chastity belt, she faces a tragic M plight: she could avoid pain by staying flaccid, yet she gets aroused and even as she weeps from agony, her cock grows larger and harder...!