Legend tells of the establishment of the land of Saiunkoku.

The land of Saiunkoku was once infested by demons who threw the country into turmoil.

In the seemingly never-ending chaos, a youth went on a journey.

The youth slayed demons and monsters, sincerely praying for the safety and happiness of the people, while continuing his long never-ending journey.

Finally, his sincerity touched the eight gods.

Ran sage, Hong sage, Heki sage, Ko sage, Haku sage, Koku sage, Sa sage and the Shi sage — the Eight Coloured Sages named after the colours.

The sages used their divine powers to help the youth.

The youth's name was So Gen, and with the help of the Eight Coloured Sages, So Gen forged an era of peace with the nation of Saiunkoku and became its first emperor.

After the death of So Gen, the Eight Coloured Sages disappeared without a trace. However, the elegant palace built for the Eight Coloured Sages, named as the residence of the Eight Coloured Sages — Sento Palace, is said to stand in a corner of the royal palace.

Prologue

In the late night, deep in the royal palace, a group of court ministers of state were having a secret discussion.

“……indeed it is a big problem.”

“Exactly, it is a bad situation.”

“The emperor has already ascended the throne for half a year.”

“Are we really not able to do anything......?”

“We originally thought that everything would turn out for the best……”

“This group of old men really cannot follow the trend of the youths.”

“Rubbish! What kind of trend is that!?”

An old court minister of state roared resentfully. He was an active general in the battlefield during his youth, and even though he was over sixty, he had not changed his impatient temper even up to this day.

“But if this continues—“

“You are right, if this continues, it is hard to say that corrupted officials will not appear.”

“That’s not all; mutineers are planning to move as well.”

“The upmost important issue right now is—“ One of the court ministers of state’s tone was clearly calmer than other court ministers of state, but with a worried look and said garrulously in a low voice: “…… to think of a solution to stop all rumours that is causing uproar.”

The court ministers immediately quietened down. Indeed, the upmost important issue right now was that problem.

“You, you are right!” Another court minister wiped his sweat and coughed dryly a few times.

“Instead of worrying about the corrupted officials that may appear, I think that it is most important to appease the emotions of the people.”

“But… We have already tried everything!”

“What should we do?”

“—I have a plan.”

As this man was the court minister with the most power in the country, his surroundings immediately fell silent; everyone looked at him with expectation.

“—as the saying goes:” the old court minister said, “the wife is also the husband’s nemesis.”