My step-sister is a little M Chapter 4: M-attribute awakening

Description: My younger sister begged me to tie her up voluntarily! i used pantyhose, a mouth ball, and muscle patches to block her mouth. i firmly tied her up, and she twisted her legs vigorously, breaking free from the rope. then, i tied her securely to the bed. her hands were bound by pantyhose and tape, allowing me to knead her breasts, stroke her legs, tickle her, stimulate her genitals, and play with her body with a vibrator. her body gradually became filled with pleasure and comfort, and finally, she reached orgasm.