Mayuri is a calm girl that rarely shows her emotions. She usually follows Shido around to observe his dates with the Spirits; to fulfill her and her Angel's goal. During the beginning, Mayuri did not seem to bother about the fact that she would eventually disappear. However, after seeing Shido go on a date with each of the Spirits he had sealed, she developed the desire of wanting to live and not disappear, along with the feeling of jealousy which she unconsciously develops that later prompts Kerubiel to go berserk.