In 2077, humans discovered a large amount of crystallized material in the earth's crust with energy comparable to nuclear fusion. Even if it was only the size of a palm, it could supply the electricity of an entire city. Scientists defined it as a star mine. Subsequently, large-scale mining of the earth's crust was carried out. The satisfaction of energy enabled some scientific imaginary theories to be realized. Originally, The stagnant technology has developed rapidly again. Hover cars, intelligent robots, combat mechas, space battleships and other imaginary things have all appeared in the world of the public one by one. This glorious era is called the Interstellar Age by future generations, and together with the steam and telecommunications eras, it is known as the three major eras of mankind spanning the century.
By 2117, humanity has been wiped out. Facing invisible and insubstantial monsters, sci-fi weapons no longer pose a threat. Humanity relies on holy objects to build city-states and establish colleges and universities that train elementalists, the enemies of monsters. This is an extremely serious story that happened on campus... Ahem... Serious...
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
