Now that the demon king is dead, he's ready to go back to the underworld. He's got a plan: he'll find and kill the guy who killed him. The god of spring, who used to be a swordsman, has lost his memory of the past and is now mortal. The two of them are now at odds. The demon king wants to kill the king of spring because he loves him, but the god says he can still protect the king even if he has to pay for his own life.