Kōtetsu Sangokushi (鋼鉄三国志) is a 2007 Japanese anime loosely based on the 14th century Chinese historical fiction novel Romance of the Three Kingdoms.

It is also a time of death and destruction, when the people of the land live in constant fear of the sword.

Onto this stage steps the reluctant Rikuson Hakugen (Lu Xun), whose family had been the guardians of the Imperial Seal up until it was stolen by Hakufu Sonsaku, the ruler of the kingdom of Go.

At the behest of his mentor, Koumei Shoukatsuryou, (Zhuge Liang) Rikuson offers his services to Sonsaku Sonken with the intention of confirming the will of the Imperial Seal.

So begins, Rikuson's journey to recover the Imperial Seal and discover, with the help of his friends, his destiny.