Yun Tiangang and Yun Fei Shan, relatives of Yun Fei Xue, perished while guarding a dragon vein eight years ago. This left Yun Fei Xue as the sole survivor of his family, but he possessed a strange power that resulted in a phantom version of himself residing within his consciousness. This phantom constantly sought more power and risked consuming Yun Fei Xue's soul. Despite his successful suppression of the phantom, Yun Fei Xue learned of his family's tragic fate. He formed "Shadow," an organization dedicated to investigating the cause of the tragedy, from the shadows.