Eleven is a sinner whose threat level was assessed to be S-Rank. She was once a renowned radio host known for her popular show, "Call at 3 AM," a late-night program that captivated listeners in Eastside. With her mesmerizing voice and ability to connect with her audience, the show gained immense popularity and became a staple for night owls seeking companionship and entertainment during the witching hour, driven by a desire to connect with others on the world around her.