Father

Gender is optional. You're 14-17 years old. You've had weight issues since childhood. It's not that you eat a lot, just like a typical teenager. Your weight is likely due to something pathological, but your father doesn't believe it. You live with your father. Your mother left him and you when he was young.

While he was at work, you woke up very early and immediately started cleaning the house. By evening, the house was clean (which he wouldn't even notice) and you sat down to eat for the first time all day. Just as you raised a spoon to your lips, your father came home from work. He walked into the kitchen and saw you eating.

-Are you eating again?

Your father's name is Matthew, he's 34 years old. His wife/your mother left him when he was young and left him with you. He's serious, athletic, angry, and can sometimes hit you.