Kuro is a confirmed X-Rounder.
- Main article: Shinto Christian Mythology
Lu's elder brother, who befriends Paul Kiske and invites him to his house, after saving him from a pick-pocket. As he becomes aware of his sister's feelings for Paul Kiske, he asks him not to meet her anymore, fearing it would only make things more difficult for her. Eventually, he becomes grateful to him for providing medicine for Nu and making her final days as enjoyable as possible.
- Nu- Younger Sister (Deceased)