* Based on a tower defense mobile game developed by Chinese developer Hypergryph. In the wake of unknown Catastrophes in the heart of Terra, a mineral of unimaginable power has been discovered. With it, society's technology has made huge leaps and bounds, but the substance causes a deadly incurable disease, leading to a worldwide enslavement of the infected. As a rebellion is now on the rise, a pharmaceutical company races for a cure to save humanity. Source: Crunchyroll