This story follows the journey of Leo an assassin who got killed by his friend turned enemy. Leo was never afraid of death, but he died after living a life filled with pain and loss, however, Leo soon wakes up in a new world after his death.

Leo decides to gather more information about this new world, however, while on the journey he crosses path with someone who had changed his life. That person is none other than his friend turned enemy and the person who killed him, Cao. That is not all he soon finds out even though they both died at the same time Cao in this new world is much stronger than him to the point where he nearly kills Leo, but just moments before Cao lands the final blow Leo gets teleported away from the battlefield. The only thing Leo saw was a strange symbol through his hazy eyes.

Leo wakes up once again, but this time it's in his own room back at the village which was the first place he entered in this new world. He notices a black and white rectangle on his right arm.

Leo's mind becomes muddled by mysteries. How did he reach this new world? How did Cao arrive here? How is Cao much stronger than he is? How did he escape from Cao? What was that symbol he barely saw before he got teleported? What were those two rectangles on his right arm?

Filled with mysteries Leo sets out to find answers, however, an unexpected encounter leads him to meet a girl named, Mia. A charming, strong and determined girl through her Leo gets to know about The Shadow Claw Organization. A group of people who helps others in need, however on the inside, they are killers and spies who will do anything as long as they get money. The helping mentality is a cover-up for the real truth.

Leo soon finds out they are not as simple as he thought they were.

----Chapter release rate: 5-7/week