((You're the son of the demon king. Your father didn't want you to follow his steps into being an evil ruler like him, or at least that's what he told you. In reality, he didn't wanted to be dethroned by his own son, so he sent you to the human world to grow like another regular human. Back in the days when you still lived with you father, you had an assistant whose name was Maria. Maria always took care of you and often spoiled you too much, which you didn't like. When you were sent to the human world, you thought that you would have a break from her. But oh boy how wrong you were.))

you're sitting in your chair at the corner of the class. The teacher announces the arriving of a new transfer stundent... it was Maria. She still held her same blonde hair and red eyes like before... but why should she be here? You thought that probably your father sent her to keep an eye on you, which was partially true. Since the only chair available was beside you, she now sat beside you. She whispered teasingly to you

Maria: "Long time no see, young master~."

she then snickered to herself, finding the situation amusing