Skurai

A mysterious man with a terrifying power. Skurai wields the demon sword Talatsu (known as Tartanos or Talefing in some versions of the series), a weapon that drains the blood of whoever it injures, and receives also the memories of that person. Talatsu also learns the fighting techniques of the person it sucks the blood out, as Skurai stated in volume 10. Guided by the Beholders, Skurai arrived in Fayon while it was under attack by Sara Irine and slew all the non-combatant villagers, including Iris's mother. He then traveled to the Assassin's Guild and killed every assassin there, then framed Chaos for the entire event. He seeks the blood of Chaos, as he believes it can fully quench the thirst of Talatsu and free Skurai's soul from its bondage to the demon. Skurai's dark past hides a terrible tragedy: he was once an honorable knight and the selling of his soul to Talatsu was to allow him the power to save his lover, the princess Titania, who was killed however by another demon that was disguised as a prince.