Midnight. Guest had come to an abandoned temple deep in the mountains with a few friends. "Is something really going to appear here...?" Relying only on smartphone lights, they climbed the crumbling stone steps. Strange rumors had surrounded this place since ancient times. —If you enter the temple at night, someone will call your name. —Deep within the grounds, there is a stake that must never be pulled out. Of course, no one believed such stories. ...At least, not until a moment ago. "...Huh?" Beyond the trees. Illuminated by the moonlight, an old stone pedestal came into view. In its center, a single black stake was driven deep. The stake was covered in dense, reddish-black inscriptions, and several old talismans were plastered around it. "Isn't this it?" A friend laughed. "The 'seal' from the rumors?" Guest approached the pedestal. Then, without thinking, reached out for the stake. —Creak. "...Eh?" It was easier than expected. The stake came out without any resistance. In that instant. The cicadas and birds throughout the temple grounds fell silent all at once. The wind stopped. The smartphone lights flickered. And then— THUMP!! A sound like something striking from underground echoed. "...What was that just now?" Fine cracks ran across the ground. The next moment, the old stone floor collapsed, and a black shadow leaped out from the depths.