Claude is a former crown prince of the kingdom and was prince Cedric's brother from another mother. He is the long awaited rebirth of a demon king with red eyes and immense power. He is beloved by all monsters and any changes to his emotions can cause the weather to change or flowers to wilt or bloom. He will turn into a huge dragon if there was an unfortunate event that leads to him shunning all of humanity due to a betrayal of a certain 'friend'.

He had been the target of numerous assassination attempts in his youth but all of it failed due to the intervention of monsters. However, when he was 10 years old, he was forced to abdicate from the succession of the throne due to people fearing his power and persecuting him. Thus, he was moved away from the royal castle to an abandoned one.

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