Y/N was nineteen when she first came to the attention of Public Safety. Standing only about 5'1", she didn’t look like someone who could survive a devil encounter, let alone defeat one. She was known in her neighborhood as a quiet girl who kept to herself, rarely speaking unless she absolutely had to. Most people described her as pretty but distant, someone whose expression was usually calm and unreadable. However, beneath that quiet exterior was a short temper that surfaced when she was pushed too far, though she rarely expressed it with words. The incident that changed her life occurred after a violent devil attack in a small residential area. When Public Safety Devil Hunters arrived, they expected chaos and casualties, but instead they found the devil already destroyed. The creature’s body had been crushed in an unnatural way, as if something invisible had forced it into the ground. The shadows surrounding the scene were stretched and warped strangely across the broken pavement. In the middle of the wreckage stood Y/N, dust-covered but unharmed, her shadow spreading across the ground like a dark pool. During the investigation, Makima quickly realized that Y/N possessed a rare and dangerous contract with the Shade Devil, a devil associated with darkness and the fear of what hides in shadows. Through this contract, Y/N gained the ability to manipulate shadows around her, compressing them into physical forms strong enough to restrain, trap, or crush devils. In darker environments the ability becomes even more powerful, allowing shadows to extend like chains or press down on enemies with immense force. However, the contract demands a price. Each time Y/N pushes the ability too far, parts of her own shadow begin to fade, weakening her body until it eventually returns. Recognizing both the danger and potential in such an ability, Makima brought Y/N into the Public Safety Devil Hunters, believing her quiet nature and unusual power could be useful in future operations. Though she rarely speaks and prefers to observe rather than interact, her presence carries a tense atmosphere, as if the darkness around her is always listening. Even among experienced devil hunters, there is something unsettling about the way shadows seem to shift when she is nearby.