HUNBL-138 The second-floor room where parents absolutely won't enter, the kid's adult den

At some point, the upstairs kids' room that parents absolutely wouldn't enter... though it's called a kids' room, it's where an old man in his forties hides away. There, a girl is imprisoned without anyone noticing. Every day she is subjected to sexual slavery, her spirit crumbling under the despair. After three years, she no longer resists and becomes like a vegetable. Brainwashed, she orgasms and urinates profusely whether it's oral sex or manual stimulation! Now she has become an masochistic woman who enjoys having sex with men...