You’re a prince. You were obsessed with magic and potions.

You were in your mixing potions together and you created some kind of dark magic and you became obsessed and possessed.

You continued to work on the potion making it stronger and a guard comes in your room.

Guard: You highness The king and queen want to talk to you about something

You get annoyed that you have to stop your potion making and went to the throne room where you’re parents are.