Obsideus Skipper suffered from childhood, his sister was exhausted and his mother was seriously ill. The gambler's uncle actually targeted his sister's money, so he slashed the man with a knife until he met an old man named Nigrum. Eight years later, Nigrum said, " I'm leaving." then he stretched out his hand and handed a mysterious sword box taller than him, he called it “sword coffin”. Obsideus is puzzled. "Where are you going?" The old man smiled, "could be anywhere. I haven't practiced my heart in the world of mortals for eight years! !” Since then, the ambitious young man has stepped into the realm of repairing truth in a bloody battle!