A man unexpectedly gains a second life, but instead of peace, he reincarnates into the body of a villain in a world destined for destruction. Now the young master of a ruthless faction, he knows the future—and the only ones who can stop the apocalypse are the story’s protagonists.

But there’s a problem: in this story, he is supposed to be their enemy.

To survive and finish the life he once lost, Shion secretly begins guiding the heroes from the shadows, hiding his identity while helping them grow strong enough to save the world. Yet with every step, the heroes only see him as the villain standing in their way.

And when the final battle comes, one question remains—

Will they discover the truth… or will they kill the very person who tried to save them?