At some point, large and small wormholes appeared in dark places around the world, and unknown dark races also emerged. We call them monsters. But in the face of monsters, our human power is so small. Of course, everything in the world is interdependent. Since evil demons have appeared, their nemesis will naturally appear. And we collectively call them "Tianyan".
There is such a mysterious academy in this world. Some say it is in dimensional space, some say it is in the deepest forest in the world, and some say it is floating in the air... There are different opinions, and no one knows which one is correct. All I know is that there are not many students in this college, but they are all over the world. Who knows, the person passing you by is...