The Story of Sitius, Book 1, the only male in Warhammer 40k

!!!IMPORTANT!!! THIS IS MY AU AND I DON'T TAKE REQUEST, THIS IS NOT ONE OF THOSE STORIES WHERE YOU VOTE FOR WHAT HAPPENS IN THE NEXT CHAPTER. This is an alternate universe where all males in warhammer are gone, only females remain and yes that means there are female space marines in this AU. All the important characte...