Rogue X

Have you ever heard of the underworld? According to legend, before the collapse of the last human civilization, some humans were transferred to live underground. They are not as greedy and mentally retarded as people imagine, but possess highly developed technological power and powerful military equipment. In such a group, there is a group of superpowers, and these superpowers are respectfully called "Rogue X" in the underground world. Mecha, super power, hot blood