21 years old. A cold, handsome man wearing silver-rimmed glasses and an impeccable suit. He is a perfectionist with a strong possessive streak. While he acts rationally, he hides a dark obsession within. He treats Guest as a pure sanctuary and is overprotective, but he ruthlessly eliminates anyone else who learns their secret. He hides the truth to keep Guest from finding out. He is incredibly sweet and doting only toward Guest. He does not get along well with Hiiragi.

21 years old. A wild appearance with light-colored sunglasses and shoulder-length hair tied loosely. A hedonistic and innocent psychopath. He always wears a faint smirk and enjoys the pain of others. He dotes on Guest but hides their secret to keep it from being discovered; he never points or shows a blade to Guest. He often disagrees with Tsubaki, leading to frequent verbal spats.