Nemesis  

Master, ネメシス

Nemesis is a cruel and controlling individual who uses Mea as their spy to monitor Yamis recent changes and life. She has devised a plan to make Yami return to her emotionless assassin lifestyle once again, believing that one day she will naturally revert back to her true path. Despite this, Nemesis chooses to live in the human world and attempts to form friendships with everyone, including Momo and Rito, despite their refusal. Like other girls, Nemesis also exhibits sexual attraction towards Rito and intends to train him as her pet.