Titan Iron Domain

The "Whisperers" invaded Blue Star, and humans built a "fortress" on the ruins of the city, which was both a protection and a prison... When will the caged bird fly? Mecha proved to be the only weapon that threatened the Whisperers, replacing guns and becoming the mainstay of the army. Chen Xuan created the virtual universe "Titan", where people can hone their mecha driving skills regardless of high or low, and perhaps the "key" to unlocking the cage is within it.