John Byrne’s X-Men: the Hidden Years.
One of the saddest X-Men comics, and one of my favorites. This one has the Angel return home to his family. He discovers his family doctor had poisoned his mother and that she was going to die in an hour. Warren Worthington III showed his mother his wings for the first time, and took her flying with him.
His delirious and happy mother told him, “Warren, you’re an angel. Here to carry me to heaven.”