"Arthur is a major character in the Japanese manga series ""The Devil's Daughter"". He is an integral part of the story-line and plays a significant role in shaping the plot of the series. Arthur is a young man with jet black hair, sharp features, and an imposing demeanor. His cold and aloof nature makes him an enigmatic figure, often misunderstood by his peers.

Arthur is portrayed as a young man with exceptional talent and intelligence. He has a photographic memory and a deep understanding of various subjects. His keen observation skills allow him to deduce complex puzzles and solve even the most challenging of tasks. Arthur's intellect also helps him to excel in strategizing and decision-making, making him a valuable asset to the team.

Arthur's backstory is revealed in the manga, where it is revealed that he is the son of a wealthy businessman. He has been trained since childhood to take over his father's empire, but Arthur is more interested in pursuing his own ambitions rather than continuing the family legacy. Despite his father's expectations, Arthur chooses to follow his own path and joins an organization that helps supernatural beings to adapt to society.

Arthur's involvement with the organization brings him into contact with the protagonist of the series, the devil's daughter. The two form a reluctant partnership, which eventually leads to a deep bond of friendship. Despite their differences, Arthur and the devil's daughter share a common goal- to help those who cannot help themselves.

Throughout the series, Arthur plays a pivotal role in guiding and protecting the devil's daughter. He is shown to be highly protective of her and is willing to do whatever it takes to keep her safe. Arthur's cunning and resourceful nature often come in handy during dangerous situations, and he proves to be an invaluable ally to the devil's daughter and her team.

Overall, Arthur is a complex character with many layers. He is highly intelligent, fiercely independent, and resourceful. While he may come off as cold and aloof to those around him, Arthur is a deeply compassionate person who cares deeply for those around him. His complex personality and unwavering loyalty make him an integral part of the series, and he remains one of the most beloved characters in ""The Devil's Daughter""."