User blog comment:Ncduru/Alvarez Empire Arc: Recap/@comment-114.108.214.157-20160229084719/@comment-24102956-20160229103729

It's safe to assume that God Serena used his position as a 1st-ranked Wizard Saint to locate and kill Acnologia in his spare time but when the Saints formed the reformed Council, he decided to ditch the job of Chairman and defected to Alvarez because they have the means and resources to help him get what he wanted.