People may look back fondly on the years when everyone could freely use angelic powers. Everyone had a pair of differently colored wings behind them and developed abilities of their own. Violent conflicts were constant, but people relished what seemed like a blessing from heaven.
He alone had been unable to become an angel since birth. Amid crowds of winged people, he wandered without finding a place to belong. Even after he eventually entered into a contract with a demon and gained black wings of his own, he could only become a lonely demon.
No one could understand the loneliness in his heart. No one could tell him how demons came to be. No one could show him the way forward. And no one could take even a little of his freedom from him.
When the end arrives, will he break the deadlock and create an ancient miracle, or preserve the status quo and protect a ravaged world full of angels?