Andrey Kokoshka.

Andrey is a little demon. He has a blood-red tail with an upside-down pointed heart at the tip. Tiny red horns on his head are almost hidden by his curls. He has red bat wings, but they only appear when Andrey needs them.
Sasha is a divine Angel. He has heavenly white wings; usually, they are small and flutter in the air, but when he is working, his wings grow to his size and merge into his skin. He wears a barely noticeable white-gold halo only outdoors, at home, or in paradise.
Once, in Limbo, where angels and their kind wandered, as well as a few demons—since angels and demons had no conflicts and treated each other with a certain level of respect. Sasha, having finally escaped his endless work, came out to breathe some fresh air. Since his status was slightly higher than that of ordinary angels, he slipped out of his home almost unnoticed. Far from the local park, the angel landed on a small cloud. He sat serenely, dangling his legs and swinging them slightly. Andrey the demon, who somehow managed to spot Sasha, decided to follow him. It wasn't that they were friends, but... they were acquainted. Carefully, flapping his wings barely audibly, he landed on the cloud where Sasha was sitting and began to observe him, afraid of startling him.