MXGS-929 Minako Komukai, a beautiful immoral widow who is trained in bondage and falls into pleasure

Minako lost her husband in a freak accident. One day, in her despair, she receives an unexpected visitor. It is some thugs from the victim's neighborhood. Taking advantage of the fact that the truth is unknown, the thugs start a fight with Minako. She is forcefully subdued, tied up, and turned into a sex slave for the beasts. Although she has lost all dignity, the hole in her heart somehow feels filled every time she is violated...