Horoko is the homeworld of the Horsehead race and the capital of the Horsehead Empire. It is also the seat of the high priests who control the Solar Church of the Unconquered Sun. Horoko as a planet is composed of three main continents and as a whole has a slightly cooler climate than Earth. Thousands of years ago, the inhabitants of the planet worshipped the nature deities knownas the Old Gods. Then, a group of Horsehead prophets converted most of their race to the worship of the monotheistic Unconquered Sun. The political, worldwide unification of Horoko under the monarchial First Citizens, the unity of Unconquered Sun worshippers in an official Solar Church, and the expansion into space are more recent aspects of Horoko and Horsehead history.