Tokuko is the main female lead and Maria's childhood friend. She and Maria meant when they were six years old, unlike all the other kids, Toukko found Maria interesting, instead of scary; commenting that his red eyes were cool. This meeting lead Maria to love humanity and the two to become inseparable. She has demonstrated unnatural strength for a human and is incredibly protective of Maria, and will not allow anyone to call him a monster. Whenever, Maria is effected by his vampire weaknesses, Toukko carries him around and cares for him.