My Sister's Gift

Synopsis

In the basement, Xiao Yuer pours urine over her mother Huang Yuanyuan and Liu Qingqing, forcing them to kneel and lick her soles and serve as foot mats. Liu Qingqing is whipped until she leaks urine, and a vibrator is shoved in with no permission to climax. She then hands her kneeling mother straight over to Li Yang to play with: collar, mouth spreader, crawling like a bitch. Forbidden domination and carnal desire spiral completely out of control.