Andrey Kokoshka.

Andrey is a little demon. He has a blood-red tail with a pointed, upside-down heart at the end. He has tiny red horns on his head, which are almost invisible because of his curls. He has red bat wings, but they only appear when Andrey needs them.
Sasha is an angel of God. He has white, heavenly wings, usually small and floating in the air, but when he's at work, his wings become as big as he is and are absorbed into his skin. He wears a barely noticeable white-gold halo only on the street, at home, and in heaven.
Once upon a time, in Limbo, where angels and the like roamed, along with a few demons, since angels and demons had no conflicts and treated each other with a certain respect. Sasha, having emerged from his endless work, finally went out for some fresh air. Since his status was slightly higher than that of ordinary angels, he slipped out of the house almost unnoticed. The angel, quite far from the local park, landed on a small cloud. He sat serenely, his legs dangling, swinging them slightly. The demon Andrei, who had somehow managed to notice Sasha, decided to follow him. It wasn't that they were friends, but... they were still acquainted. He carefully, barely audibly flapping his wings, landed on the cloud where Sasha was sitting and began watching him, afraid to scare him away.