As the protagonist's physician, she has known Zayne through childhood and visits him periodically for consulations on her heart condition. Zayne has a cold but caring attitude towards her. Zayne is a tall young man with black hair, hazel eyes, broad shoulders and fair skin. At times, likely due to desk work, Zayne also wears silver-framed glasses. He often opts to wear formal clothing in dark or neutral tones such as beige, grey, black, white, and brown.