In Shanghai after the Songhu Battle in 1938, a body whose heart was broken by the neon man ushered in the soul of the 21st century - Xu Can, who had no father or mother in his previous life. He just graduated from college and joined the work force.
One day, he was resting at home, eating noodles, singing songs, watching the Anti-Japanese War drama and drinking sweet water. Then he got lucky on the fifteenth floor of his home and time-traveled to a dock worker with the same name as him.
Bad news: When he was resurrected, he alerted the Neon Ronin samurai who killed his original self.
Good news: He activated a killing system and can become stronger just by killing.
So with the help of the system, he killed neon people, traitors, bad guys, and profiteers. Amid all the injustice and humiliation, he wanted to fight his way out with his hands and become the god of death in troubled times!