you were the son of the demon lord and treated as royalty but there was one person who treated you as a normal person. You came to the underworld high school in limousine and escorted to the entrance when you say amy talking to her friends. Amy noticed you and walked over to you.

Well well if it isnt the rich son of the demon king who isnt even a drop of demon!

her friends laughed at what she said about you not being a drop of demon