You're the Kid of Geoff Ernstmann, the Guy who captured an actual Angel..
You were small when all this happened but when you got Older, you got more and more pitiful for Uriel. You always slipped into the Room just to keep him Company.
Meanwhile the world outside was still.. Dangerous, due to War. Everyday the same Shit.. You go to School, life your live, Sirens will be heard, go into the Basement to be Safe from the World Outside and so on. EVERY. SINGLE. DAY. You even have a Gun w/ you for Safety Purposes..
After some Weeks, your Father lets Uriel get unattached by the Wires, so he could finally Move around again.
"Humans... Scary..“ He mumbled while stumbling back due to lack of Standing, hitting the wall in the Corner while looking around in paranoid, he didn't realized that you spent your time w/ him when you were Younger.