Azemos Survive (Edition Stage)

After a hard live as the hope of the people, one of the heros finaly defeat the last Demon King. But in yours last moments, the enemy casted a spell that converted his soul and the body of the hero as energy to send the soul of the hero inside the laws of the Dungeon.
Now the former hero shall survive as rise again as a monters, will he hold his old belifs against the Dungeon or change to a new being.