In May 2015, a giant beast of unknown origin in a crack in the deep-sea Mariana Trench came to the earth through a wormhole and began to destroy the earth's civilization. In order to resist the attack of the giant beast, humans developed their own "monsters."
In May 2016, the giant mecha was successfully developed. Humanity began to fight back and was successful. It began to make humans forget about themselves. As the monsters evolve more and more powerfully, mechas are no longer the best defense and have to adopt new plans.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
