RBD-763 Human Pet Training: Loved Like a Bitch, Captivity by Rin Sakuragi

A year after losing her beloved pet dog and falling into deep grief, a woman finds herself emotionally vulnerable. Her husband, once a kind and caring partner, begins to notice her fragility. When a mysterious man appears and becomes obsessed with her, he commits an unforgivable act. From that day forward, the woman is treated like a pet, stripped of her freedom and forced into complete submission.