His admiration for Millia started when he watched her compete in the Holy Knight Selection Tournament and it is also assumed that he was a competitor. In Millia's Guilty Gear ending, which is canon, he tracked her several months after their first meeting and begged her to be her apprentice. Millia shrugged him off, but he was persistent, telling her that she was charming and that he was in love with her. Because of her untrust towards people in general, she ran away from him.
In Guilty Gear X, he finally asked MIllia for a date which she gladly accepted. However, in Accent Core, his feelings toward her lead the Assassin's guild to kidnap and brainwash him to kill Millia. When he comes to his senses, he has no idea how he got there, but notices Millia's dead body and cries bitterly for her. Although his date with Millia is a possibly canon, her death is not due to her appearance in Guilty Gear Xrd -SIGN-.
- Millia's Admirer is nicknamed "Stalker-kun" by fans.
Guilty Gear X
Guilty Gear XX