This theory is that Feather is not dead! as well as what he might do.
I think maybe feather faked being killed by fire, as his "death" was quick and fire never made sure he was dead. He also might of limped away when no one was looking and is in the prideless stretch, now hunting, and surviving alone.
After this, possibly Feather will be alone and scared as he slowly grows bitter towards nothing who had seemed to leave him. Not even mourning his "dead" body. He then would grow up to be a no-mane soon to then cross paths with Nothing, and since I theorize he is Lite's reincarnation he would fight both Hover and Nothing. Perhaps like bringing the original incident through a mirror and instead of Lite or Feather being Kyoga's or Nothing love, he is like a close friend that she left behind for something.
(i mixed up fire with feather probably millions of times