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The loss of honor lasts only a moment. Ghost assassin, ace spy, shadow dust... Julian, who has many names, was framed as the murderer of the president and became a prisoner. The night before his execution, a man appeared in the shadows. "There is only one chance. Accept the mark of the devil and gain the ability to escape." "What's the price?" "You will live in darkness forever." "If it can clear my grievances, I'll accept it!" Magnetic electric lights illuminate the city's night, and steel guards protect the safety of citizens. And in the darkness, Julian's mark glowed.