Touran is the capital city of Hokkan, the grand in scale. In the Fushigi Yuugi series, this is where the Shinzaho of Genbu is located. During Chapter 36, it was revealed that Touran will be handed over to Kutou in exchange for the Life Stones.
The vast palace where the emperor lives is the focal point, with all the districts and communities of the city spreading outward. The city is well fortified, and full of alleys to get lost in. The city prospers from it's skilled iron industry, producing weapons and tools. The west side of the city is known for being a breeding ground for disreputable sorts.
In Genbu Kaiden, as the war and famine outside the city walls worsened, more people found themselves flocking into the capital seeking work, food, a home, or safety.
Since the coming of the Priestess of Genbu, Touran has experienced a sort of renaissance. It is now not only famous for its iron production but for its cozy (yet overpriced) inns, brothels, and restaurants. After years of speculation and faithlessness, religion has finally found its place in the capital as locals now pay tribute to Genbu or Buddha respectfully through weekly visits to temples or for the less devout, a simple prayer during the winter.
Involvement in the storyline
At first sight, the capital city seems to be irrelevant to the present story but as the plot goes on, it becomes a very important location. This is where the Kutou Special Taskforce often base and clash with the Genbu Seven for a desperate battle, until the time came when Hokkan began freezing over, causing the spread of disease, poverty, hunger, and death. In recent chapters the citizens are revolting against the King Tegiru, who is leading a luxurious life inside the castle despite the cries of his subjects; it is clear that Touran wants King Temudan back to the throne.