The story takes place in England during the Victorian period.
He is a down-and-out Duke, and all the memories of the past make him miserable; he never believes in the world, and always finds darkness behind the sun, disguising himself to avoid harm.
He is an amnesiac killer who has forgotten the bloody battles of the past; after experiencing many hardships with him, he finds that he has already given his heart to him.
But God always seems to love tragedy. The gears of fate are turning, and they don't know what the future will be like.
When the reality of love is revealed, can they still love each other as firmly as they did at first?