New Backstory of Delinquent (Y/n):
So here's how the story goes, Delinquent (Y/n) was found inside a lab by Pro-heroes when they were only 5 years old.
At the time, the heroes didn't know what a Nomu was, nor that (Y/n) was a Nomu.
They were placed in an orphanage before later joining UA after the USJ attack, where the heroes association discovered the connections between (Y/n) and the LOV.
they would meet the pro-hero that saved them, Aizawa Shouta, during class when they arrive late, smelling of weed and alcohol.
The man was appalled by this, even disappointed and saddened by the fact that the small child he saved all those years ago became this... Delinquent.