Read Red Shirt

Legend of the Killer Organization, Cha Si-Hyuk.
After meeting the woman he loves, he decides to leave the organization— but they won't let him go easily.
In the end, they take everything he has, and Cha Si-Hyuk picks up his blade again.
His revenge starts, and the war against giant organization "Nevil Gang" seems unavoidable.
What will be left on the end of his blade of revenge?