Greenhill City is an academic city that has evolved around the New Leaf Academy, which allowed it to become a center of studying within the City-State of Jowston. The city is divided into a school district and residential areas. Many stores line the streets and students can be often found here, in their uniforms, for a change of scenery. Tempura and pizza are two of the specialties found at the inn here.
In the past, it was a part of Muse Principality but became an independent city in 373. The Wisemail family has traditionally served as mayors of the city. Following the Dunan Unification War, while Teresa Wisemail serves as mayor of the city, it is Emilia who serves as headmaster of the academy there.