After ten years of drinking ice, it is difficult to cool the hot blood.
Ten years ago, a shocking conspiracy by the old gentry headed by the current prime minister against the founding military group poisoned the prince of the Northern Kingdom with a strange poison, and the whole family of the Western Kingdom was bleeding.
Ten years later, when everyone thought he was dead, he returned to the turbulent Kyoto with a frail body that could burn out at any time. His trip was to find out the murderer, just for revenge.