Secret Realm

[It is not that the system does not have a harem] [Readers are welcome to create characters] Children from thousands of worlds will be sent to the Origin Continent to study, and they will explore the magic of various elements in an academy filled with powerful people. And all of this is to fight against the devouring of that indescribable power. One world candle after another is extinguished by the devouring of shadows. How long can our world last...