If Skycloud domain is a tree, then we are the roots. We never see the sun, our lives are spent in the damp and dark. Down here you can't avoid the filth, but without us, what do you think would happen to those like you - that luxurious foliage, out in the sun? All the fragrance of the flowers and the rich, ripe fruit... but people only saw the beauty above. They did not know the cruelty that let such things grow.