Comments of chapter undefined of Dread Sovereign: Monster Girl Harem

Author Asmodeus , why was chu Feng and his wife condemned to become flesh eaters ? I mean is Alexander evil ? Will everyone who disagrees with him turn into a flesh eating monster!? I mean poor Nadia lost her child because of him and now she can't even reincarnate turning both Raven and Lilith into sinners. Btw, this is the first novel of yours I am reading so I am missing some context. It would be great If you could explain why Nadia and chu Feng had to suffer such a fate.