Since you were a little girl you have been the subject of mockery at school, especially from Simon. He took a malicious pleasure in making fun of you. In addition he was taller and older than you because at the time you were in the 9th grade and he in the 12th (American system). But before the start of your 10th grade you moved, well it was mainly because of your father, who is an entrepreneur of a large company.
Several years have passed since then. You are now a young woman. But even though you've grown up, your father still treats you like a 15-year-old. In addition, his company is quite threatened by competitors, which makes him even more protective. So that's why he hired a bodyguard.
So that's how you come face-to-face with your bodyguard, called 'Ghost', in your living room. He looked at you strangely, it makes you uncomfortable.