Soule Prison

Soule Prison, once known as the Prison for Soule, is a medium-security Kyanitian prison located on the shores of Terra Bay, north Kyanite.

It was initially built by the Treble siblings as a single-cell fortress to contain Soule Treble after his mass genocide, but was later turned into a prison for all followers of Soule. The prison's key characteristic is the material it's been built with: Soule's Stone, mined from Char Valley. Certain bricks of Soule's Stone are also grinded up into a fine powder and infused into the food of Kyanitian prison cleaners, to cause Soule's Curse to grow on their Heartstones.