User blog comment:Imouto-tan/Huozai/@comment-26362471-20160723161815/@comment-26362471-20160726042400

Souls destroyed by Karmic Retribution cannot comeback and are stuck in eternal damnation for their sins. His body still exist and is kept in an Absolute Zero jail cell with powerful magical barriers and super alloy chains keeping the body in place.

Kanon could bring him back to life, but he also attacked her people and caused the First and Second Witch War because of it, so she's out of the question. ^ ^;

All of the best Resurrection magic users are good and have nothing to gain bringing him back to life.