My Bodyguard Is the Fairy King

The fairy world was invaded by demons, and I tried my best to resist the invasion. But I had exhausted all my magical powers, and finally I was attacked by the traitors around me, knocking me down to earth. I descended to earth and was reincarnated into a child. Unfortunately, I was sealed in his mind and could only coexist with him. But being smart, I will definitely be able to find a way to lift the seal, but before that, I want to have some fun in the human world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.