Tearju Lunatique (ティアーユ＝ルナティーク Tiāyu Runatīku?) is Yami (Golden Darkness) and Mea Kurosaki's creator, as she used her own cells in order to create Yami but didn't do the same for Mea. She is a genius in Universe Biotechnology and has been since she was a teenager. She takes the role of a klutzy and beautiful homeroom teacher at Rito's school in the later chapters of Darkness. She is aware of Yami at school and tries to get close to her like before she left her; she is also aware of her feelings for Rito.