Resident Evil: Legend of Blue Night, Volume 1

The Biochemical Man Night Blue was created by Doctor Feng Lei, and was then forced to teleport to a thousand years ago by Selina, who loved Doctor Mu Feng Lei. Completing a mission that even Nightland himself didn't know about. Later, in that era, Blue Night fell in love with a man named Feng Chen Xiao. This caused a series of grudges in the martial arts world to arise. Eventually, he died and returned to the modern era, learning the ultimate meaning of his creation.