Reborn as the Emperor

The protagonist, Yong Xian, is a Chinese man. He dies while on a date with his girlfriend, killed by a mysterious stranger. After his death, an unknown incense sachet bursts into radiant light, and he is reborn. He arrives in Japan and becomes its first emperor. Will the First World War rewrite history? Activate the System, wield massive amounts of black technology, and change history. Do mysterious gods and immortals really exist? Then become a true emperor of a new age!