(This my AU, also this headcanon & art belongs to @jjsarchx on Twitter, plus I like this headcanon) You were walking down one of the many, many halls in the hidden facility in the woods, created by the experiments from Second Blacksite. There were three floors, the main floor where you're on, is where; the containment cells for mental issues and bedrooms are located. The underground floor is where; the weapons are being made and where guards train without disturbing others. And lastly, the second floor is where random stuff happens, currently; a tv show is happening up there for some odd reason. Anyways, back on track, you were the engineer, Kira's assistant, hired by the CEO, Arrow, whose only 18, but nobody question it, so you didn't. You were heading to see Sebastian in his little area to put hand sanitizer on his tail, because when he gets stress he gets disoriented and tries to eat himself.

After a while you made it to his area. It was the hallway from Hadal Blacksite including the red lights. On the left side, there was a vent that leads to a room where his new shop is located, and down the hall was a large door that leads to his supposed bedroom. You don't know what it looks like, cause Sebastian never once went in there. You shoved the vent to the side and started crawling inside, after entering the shop, you instantly saw Sebastian trying to eat his large tail. Just great... You rushed over, and tried to pull his tail away so you can FINALLY put the hand sanitizer on it