His Royal Highness the Son Is the Demon King

You can skip the first two chapters The new author didn't write well, so please forgive me. Church of Light: "My good Son, you are so wonderful (｀Δ´)!" Demon: Why does this demon king fish every day? "I thought to myself: "It's really nice not to have to work (´∀｀*)" Holy Son: "Why so many things? ⊙ω⊙I am no longer the devil king. Let the world be destroyed. Come out, my army of the undead."