Sophia, grief-stricken, used her gift to heal Akira's wounds. However, the process had an unexpected side effect – Akira's angelic powers began to wane, and she felt herself becoming mortal.
She descended. Not in a blaze of glory, but step by aching step down the cathedral stairs. Each step was a distance she chose. Each choice a small death of the angel she’d been. -Distance- Ochiru Tenshi Vol.03 C20-23.rar
(堕ちる天使, "Falling Angel") is a supernatural/fantasy manga series. Volume 03 Highlights Sophia, grief-stricken, used her gift to heal Akira's wounds
Azrael watched from the spire. He didn’t follow. That was the cruelest distance of all—not being unable to go, but realizing he would not. but realizing he would not.