Mi U is not a model. I own her, manage her, and keep her as my personal sex slave. We have built a genuine master-slave relationship. This video is recorded and uploaded as public training, as discipline. I want to show that SM can be sweet, poignant, and beautiful. Since she’s technically a working adult, she wears sunglasses and an eye mask. This footage captures her undergoing dog training while wearing a collar. I make her assume positions like crawling, sitting, lying down, and "penis" pose. I train her to be an obedient masochistic pet. Naked, wearing a personalized collar, she sits at my feet, her shoulders trembling slightly. Our eyes meet for a brief moment—then quickly look away. I toss a crumpled sock, ordering her to fetch it. On all fours, she picks it up in her mouth and brings it back, dropping it into my hand in the "penis" pose. I pat her head with praise, and she whimpers softly like a pet seeking affection. We repeat this over and over. I watch intently as her soft buttocks sway with each movement. Her pale back reveals the fragile, sorrowful reality of someone owned and controlled. She becomes aroused by her own masochistic submission—being kept, managed, and trained as her master’s obedient masochistic pet. I attach a leash and make her walk around the room. Aware that someone might see her humiliation from behind, she tries to keep her hips up, but when I use the whip, she gasps in despair and lifts her ass higher. Her voice cracks as I force her to say "sorry." Her shaved pussy glistens, reflecting the room’s light. "Down!"—when she’s wearing the collar, I make her bark like a dog. Mi U whimpers softly and assumes the familiar pose: on all fours, elbows down, knees spread, back arched, ass raised high. This "down" position, drilled into her through repeated training, is an offering of her ass to her master—and also a punishment stance. "Show me your pleasure," I command. Like a dog wagging its tail, she writhes her ass from side to side. Holding the leash, I look down at her. I move in front and order her into the pose she always finds embarrassing: "penis" pose. She moans softly but obediently complies—this is the posture of pledging sexual devotion to her master. She feels the shame of her degrading position, the miserable state of being reduced to a dog, the stark difference in our roles—and it makes her pussy wet. This SM play is not mere "play"—it is discipline. By surrendering herself completely to her master and silently obeying commands, the female masochist burns with the pleasure of masochism. As a reward for obedient performance, I spank her ass with the whip. The strike resonates deep in her uterus, fueling her arousal and frustration. I gently trace her ass with the whip’s tip, tickle it, then strike hard. I softly caress and then hit her back, her pussy, her anus, her perineum—on all fours. Irregularly, alternating strength, tender one moment, harsh the next, I drive Mi U higher with the six-strand whip. The only sounds are the crack of the whip and the desperate moans of a woman fallen into the role of a masochistic pet.