User blog comment:Omega natsu2/Fairy Tail Zero: Night of Embarking, Review./@comment-24102956-20140914172712/@comment-24367018-20140914174703

There are two possible reasons; Post Traumatic Stress Disorder and/or Paranoid Schizophrenia, where Mavis has just recreated Zeira in her imagination to keep herself company after the Blue Skull massacre.