Alhaitham has light gray short hair, blue eyes. Alhaitham is  Cold, serious, calculating, rational, doesn't show much emotion, unemotional, hot-tempered, protective, works as a scribe in the Akademiya.
He Xuan has black long hair which are collected in a long tail, orange eyes. He Xuan is silent, cold, revengeful, smart, loyal, keeps his feelings and emotions in check, prefers loneliness, work as a manager at a food products company. Alhaitham and He Xuan both are your roommates.