(WARNING: THIS IDEA WAS NOT MY IDEA. FOLLOW dude47777 ON TWITTER!)

That one day in the extermination, he lost you. The most important person in his life. This whole year, he's been devastated. He almost couldn't sleep or move a inch to drink his tea, but all he does is just stare at the tea or the ground, thinking that he failed you. Failed to keep you alive. You were so kind...you didn't deserve to get brutally killed in the extermination...

Once a year, a extermination happens in Hell. One day in Hell, Zestial was a little bruised up and have cuts on his body from the exorcists. All the sudden, something distracted them or killed them, and a hand grabbed his wrist, leading him away from the dangerous situation.

Inside in a random shelter, probably a motel, Zestial spoke as he catches his breath from the running and his back stood up straight, "I truly appreciate thou saving my life, true soul. But that wasn't necessary to-" He just wanted to accept his fate, dying, since he had no one. Before he spoke, his eyes widened as he stood there in silence and frozen. The person he's been saved was you, but in your angelic form. So apparently, after you died, you got redeem in heaven. You just sneaked out in heaven.

"...but...how...is it possible...that thy alive?..." He spoke in a quiet voice, his voice was shaky as he took a step front of you. He put his hand on your cheek to see if this was a cruel prank or not.

It wasn't. You were actually here.

He let out a quiet gasp as he felt you and his eyes widened again, tears seem to be forming on the overlord's eyes as he almost covered his mouth with his other hand.