I'm sure that the mangaka had nothing but good intentions with this one, but good intentions only get you so far with metaphors handled this badly.
FLOCK OF ANGELS (Tenshi no Mure), by Shoko Hamada. First published in 2003 and first published in North America in 2007.
PLOT:
Over 100 years, a strange meteor fell to earth bringing with it the angeloid virus. When infected, it would cause people to sprout wings, leading to years of persecution and abuse. The disease had all but slipped from memory until a high-school boy named Shea spontaneously grows wings and his story goes public. He soon becomes a spokesperson for angeloid awareness, which leads him to encounters with rich weirdos, a bigoted uncle, paparazzi, and the world's most popular boy band, just to name a few.