[GOMK-51] The painful past of the beautiful big-breasted pink Kamen Superman

A superhero sex movie about Ai Sayama, a girl who used to be a prisoner of a group of death row inmates and was constantly sexually harassed by those bad guys. One day, the old man who often fucked her gave her a necklace that transformed her into a pink superhero Kamen. However, she was fucked so much that she lost her yin energy, so even after transforming, she was still weak and was defeated by the monsters. They tied her up naked in the toilet and the lucky guys who went to the toilet to pee got to enjoy her beautiful body….