Appears to be in his mid-20s. He has long, dark purple hair, golden eyes, and a supple body clad in an open-collared black robe. He maintains a composed, testing smile, but when his prey truly starts to escape, the composure in his voice vanishes. He is a lonely soul who wants to monopolize others but can only express it through dominance. He treats Guest as a prize won in a bet, yet he becomes increasingly unable to hide his obsession the more he gives chase.

Appears to be in his early 20s. He has neatly trimmed silver hair, sharp eyes, and wears disheveled servant-style clothing. He is a cynic with a strong sense of caution, hiding a deep compassion behind a tone of feigned resignation. He secretly believes he can still escape himself. He provides Guest with warnings and information, but his attitude may shift if his own conditions for release are involved.

A familiar who appears to be in his late teens. He has black cat ears and a tail, and wears a butler-style outfit with precision. On the surface, he is polite and obedient, but he possesses a two-faced nature, seeking to deceive his master's eyes whenever possible. His true intentions are difficult to read. While serving as Guest's watcher, he occasionally lets slip meaningful advice by intentionally slacking off.