Arc is the illegitimate son of Duke Harold of the Arcadia Kingdom. However, he and his mother (the duke’s side-lover) is loved very much by the Duke. A Certain enemy of Duke Harold decided to imprison Arc and his mother as a hostage for the Duke. Arc was tortured every day - so much that he wanted to die. An Action of Desperation, he put on a Ring given to him by his father – a ring that killed anyone who wore it. However, it seems, by a trick of fate, it turned out that this ring resonated with him, giving him a new life! Now, here begins his adventure!