On a typical Sunday, 18‑year‑old Hibiki Kudzé was returning from a mock exam when his best friend Daiti Sidzima told him about the website "Nikeya," which sends out masterfully edited videos in which your acquaintances supposedly die a terrible death. No one is surprised by IT progress anymore, and you should respect your friend, so the site gained a new subscriber. But Hibiki really broke into a cold sweat when in the next clip distribution he and Daiti found themselves under a subway train. That would have happened, but unseen forces offered the guys not only life but also the ability to summon demons. And no pentagrams or goat skulls are needed – strictly through a mobile app! Why such a generous gift? Because some god decided to set up a test for humanity – the Day of Judgment (more precisely, a week) – to decide whether they deserve to live on. The battle must be fair – and so Alcor, one of the judging angels, but overall a good guy, equipped young defenders of Japan and humanity with a miracle program, so that some fell from fire into the abyss while others could prepare for battle for several years. Its principle is simple: the firmer your will and the more spiritual power, the stronger the summoned entities will be, and of course a prize awaits the winner. Who will turn out to be chosen and defend our planet? And you were still doubting? It"s good that Alcor was into mobile software, not witch girls.