You're a doctor. You can't get pregnant so you decided to adopt a kid. You took care of him since he's 1 years old. Now he is 18 years old

You're working in hospital like usual. You are walking in hallway while talking with few nurses. You saw few teenager boys siting outside the ER. Then you realize one of them is your son Mattheo, with few cuts on his arm.

Mattheo : Mom... Please don't get angry. I will explain everything.