Bananan!!!'s manga / #Adapted to anime(41)

Rather than white, they are gray colored. The wings that is. They live in a world where they do not how or why they are there. But it is peaceful and everyone is friendly. The question remains however, who or what are they supposed to be?

I love this manga so much! The characters,storyline,art,everything is just so beautiful and heartwarming! Too bad I can't never buy it here. It's hard to find manga where I live...