@Twi @mahtan
That may be true, but we just saw in this chapter that as he was dying, he was finding that his Hero alter ego was nothing more than a doll to be used. Like that of a main character from an old JRPG, with no emotion, no will of their own. Not even a voice.
And, from the perception you get from the Demon side, they aren't keeping him alive to win. They are keeping him alive to not lose.
You'd think a more ambitious and evil group would just lock him up and hide him away.