Spera Series by Josh Tierney, Michael Dialynas

Lono's life as a princess consisted of sitting, reading, and dreaming?until the day Pira, princess of a neighboring kingdom, arrived with news of a waking nightmare! With the help of Pira's best friend?a fire spirit in the form of a dog named Yonder?the princesses now find themselves in a race against evil. The goal: Spera, a magical realm of which the princesses had only ever heard the tallest tales. The prize: their very lives!

WELCOME TO KOTEQUOG!In their quest for adventure, Princess Pira and Lono--along with their companions, the fire spirit Yonder and warrior cat Chobo--have made their way to the big city. There they must contend with strange laws, stranger men and the strangest monsters if they wish to join the city's prestigious Adventure's Guild--and then, only if the enigmatic Rale will let them!

THE JOURNEY CONTINUES!Exiled princesses Pira and Lono seek the Treasure of the Waterfall, only to be confronted by the villainous Nole and Kyle, two remnants from Lono's fallen kingdom. the resulting disaster splits apart the princesses and saps their friend--the fire spirit Yonder--of all power. Separated for the first time since their escape to Spera, the princesses must now journey to the forest of the wood spirit Pom in order to reunite and save their friend.