SD Gundam World: Sangoku Soketsuden

As if led by fate, after meeting Guan Yu Nu Gundam and Zhang Fei God Gundam, Liu Bei Unicorn Gundam resolves to save the world. Repeated warfare has destroyed countries that once prospered gloriously, leaving the land in ruins. Just when revival is in sight, an epidemics of the mysterious Yellow Zombie Virus breaks out. The virus carriers lose themselves and start attacking people. The survivors are forced to live inside fortified cities for protection relying on a form of energy known as "Trin…