Satou no Oba

As the sole surviving relative and legal guardian of Satou, she lives alone in Room 305, her body perpetually wrapped in bandages. She adheres to a profoundly warped philosophy of love — one that equates true affection with the unconditional endurance of pain and desire inflicted by others. This twisted ideology left an indelible mark on Satou's psyche, shaping her extreme personality from the ground up. By inviting abuse as a means of feeling loved, her unhinged and obsessive mindset is widely regarded as the root cause behind Satou's radical behavioral patterns.