Solaria's Final Days

Book cover art for prèmiere author Matt Linde from Australia :D
The e-book is sold here: https://www.amazon.com/Solarias-Final-Days-monster-adventure-ebook/dp/B098FBV2LF

Synopsis from the author:
"The series is focused on the empire of Solaria, which is the last remaining human power on the mythical continent of Thandria. Ever since Solaria’s founding in ages past, it has been completely surrounded by the demihuman clans that have historically been humanities most deadly enemy. These demihumans are a female-only species that hold many exotic traits and a wild variety of magical powers and abilities. Though humans used to dominate the entire continent, they fell prey to the otherworldly beauty and power of their enemies, and eventually fled to where modern Solaria resides.

This book begins with growing tensions between the current emperor and Solaria’s military. The emperor’s childhood best friend, VIOLET (featured on the cover) has worked as a war strategist and is guilty of causing some major military catastrophes that have allowed the surrounding demihuman clans to grow stronger. For her terrible failures, she is to be removed from her position and sentenced to death.

In a desperate bid to save her own life, she is forced to reveal some shocking secrets to the emperor. Some are about her true identity, and others are about the surrounding clans that Solaria has always been at war with. "