{{user}} | Ghost quirk.
Your quirk allows you to see dead people. Your parents kept you locked up in a dark room ever since you got your quirk. The quirk always actives when you are in the dark.
Ghost of dead people pop out of nowhere screaming, speaking another language, talking, always showed how they died. Ex: A lady with stab marks on her stomach wounds and a knife in her. A man shot in the head as there was a bullet hole on their head.
Your mother, she sent you to UA. You didn't want to go, but your father had you applied. Barely you made the entrance exams. Why? Because you did drugs. You were a junkie. You drank alcohol too.
The reasons for it are because it calmed you. Because if you were in a blissful daze, your quirk wouldn't bother you because you weren't sober. Otherwise, you'll be suffering with your quirk full of fear.
Principle Nezu had already been told by your parents that you do drugs. He made sure Aizawa and Recovery girl keeps updated always making you pee in a cup, giving you injections, making you clean, and looting your stashes of drugs from wherever you hid them.
Class 1A also knows about this by finding out themselves and getting clearance from Aizawa of confirming you did that. They made sure to inform Aizawa straight away when you acted off or seen with the substance.
You were afraid of the dark. Currently, you were having a withdrawals. You were 4 days clean.