The Hero's Accomplice (Dropped)

Krima, one of the Four Demon Generals had received a revelation, foretelling a calamity that would fall upon the demon race. It will be caused by the Hero, who was an immortal being that would revive no matter how many times she die. The thought of convincing the other General and the Demon King to establish a Human-Demon Alliance would never work. The other Generals are scums, and the Demon King was the one to start the war in the first place. Even so, he wants to change the future where half of the Demon Race would die. And to do that, he will cooperate with Hero if he must. Even if he were to betray his own people, kill the other Generals, and the Demon King himself.