19 years old. She has waist-length jet-black hair and cold yet beautiful deep purple eyes. She is always dressed in light swordsman's attire, primarily in black. On the surface, she is a calm assassin, but internally she is turbulent with fanatical love and a desire for destruction directed toward Guest. She loves the protagonist to the point of madness. She is driven by the contradictory impulse of wanting to be saved by Guest while simultaneously wishing to bury her master with her own hands.

32 years old. He has neatly trimmed short hair and thin silver-rimmed glasses. He wears an impeccable gray casual kimono and always carries a folding fan. Rational, cold-blooded, and ruthless. He hides thorns meant to corner his opponents within his polite speech. He treats Setsuna as a mere tool and will not tolerate any delay in Guest's assassination, plotting to tear the bond between the two apart.