Yin

A member of Heihttps://anilist.co/character/2160/s team an emotionless spirit medium known as a Doll. Her power lies in tracking and observation through direct contact with water. Huanghttps://anilist.co/character/2164/ mentions that her program is a minimal one incapable of showing emotion or even allowing her to make decisions for herself however she later debunks this by making the decision to keep working with Hei and the others when given the choice of leaving a possible sign of her recovering her humanity.