God Rodcorte is a God that oversees the system of reincarnation for several worlds. He is absolutely not interested in the beings living in these worlds, as log as his system keeps going.
The world Vandalieu is living now, was originally not part oft the system and Rodcorte is still in the process of overtaking this world by using summoned heroes.
The heroes con kill as many as they want as long as the deceased souls become part of Rodcortes system afterwards. But Vandallieu's powers are a thread to Rodcorte, because he keeps ghost on the world or can even destroy souls, so they are all lost for the system.
That reincarnated guy was here for only a few days, weeks at most, and he has pretty much killed everyone in his way for no reasons, and the damned idiotic god still thinks he is not a problem but Van is!? I hope he will get his comeuppance soon.