Sinopsis
Gray fog invades the city, and a swarm of insects swarms in. A 7.5-magnitude strong earthquake tore apart Spark City. Nero drove Flame to face the 100-meter behemoth, an opponent that was only solved through super-coupling (which laid the root of the disaster). The smoke of gunpowder has not cleared, and the strange gray fog that engulfs the senses has enveloped the war zone again. The second giant beast hides in the fog, creates illusions, uses the convoy as bait to ambush, and it is still learning their tactics. When Nero and Morey see the world completely differently, what should the two mechas believe, and how can they hit an invisible enemy?