I do not own Bleach
Prolog
Hueco Mundo the darkest and most unbearable place to be. Haven't you ever noticed the trees? Ever wondered as to why there are trees there? There is a simple answer, many years ago there used to me a sun in Hueco Mundo. Thousands of years ago, way before time it self was created, Hueco Mundo had its sun. a bright flame in the sky, there were rivers, tree's, hills of grass and flowers. For thousands of years a species thrived here, the species like no other, closely resembling the very beings of Hueco Mundo of today. Yes I mean ALL of the beings, form the small lizard the very powerful Arrancar. This species where called Ikou. But alas no one knows why, the sun disappeared, the grass died, the rivers were drained, the shifting of sand was the only sound. Even the Ikou disappeared, where? No one knows. The only reminder of the time of the sun are the long dark stubs of trees placed here and there among the sand of Hueco Mundo.
Only the Prolog, but I have a good feeling about this.