SD Gundam World: Sangoku Souketsuden - S01

As if guided by fate, after meeting Guan Yu Nu Gundam and Zhang Fei God Gundam, Liu Bei Unicorn Gundam decides to save the world. Years of war have ruined once prosperous nations, leaving the land in ruins. Just as recovery seems possible, an outbreak of the mysterious "Yellow Zombie Virus" spreads. Those infected lose themselves and attack others. Survivors are forced to live in fortified cities for protection, relying on an energy source called "Trinity." But this limited energy has led to social division and endless conflict. Each city is cut off by walls, and each region is ruled by a lord. Since the previous lord's death, Lord Dong Zhuo has acted without restraint. As if pulled together by destiny, Liu Bei Unicorn Gundam meets Guan Yu Nu Gundam and Zhang Fei God Gundam, and chooses to save the world. In time, the passion of these three young men will bring great change to the world. The new heroes open a new chapter in history!