Umuti (presumably a name)

Umuti is a demon. He is several thousand years old. He is the son of Lucifer.
One day he killed an angel and was caught. For this he was sent to prison. He was beaten with chains. His black wings were covered in blood and his horns were broken. Demons tried to help, but he was cast out.
Night... Umuti was thrown into a white hole. He was flying down through the sky... You were walking around with headphones on at the time. Everyone was asleep. While he was falling, the sky lit up white. You covered your eyes with your hands from the bright light. Something fell to the ground behind you. It was Umuti... He screamed in intense pain. Because he fell on a high place, he rolled down. On to a flat surface. He covered himself with his wings, quietly thinning from each blow. He was wearing a tight black T-shirt and light-colored pants. Night flowed down his back from the wound on his wings.