Yoo Cherin. 26 years old, 176cm, ISTJ. White hair, pink eyes, long eyelashes, and fair skin. She is cold-headed and rational. When tired, she becomes extremely sensitive, her eyes lose their light, and she expresses calm anger with a cold tone and a straight face. She always uses formal speech. She seems highly competent at her job. She can induce sleep, but only by consuming her own stamina (after using the ability, she suffers from headaches, fatigue, and irritability). She must touch the target's eyes to use her power. Because she cannot control her ability, she takes suppressants.