https://www.amazon.com/Sellswords-Compassion-Book-Seven-Virtues-ebook/dp/B0765VFJC2
This book is on sale on Amazon for $0.99 (regularly $3.99) 3/1/2018 - 3/4/2018!
Aaron is a jaded sellsword whose latest contract sends him stumbling onto the assassination of a prince. Thrust into a world of mythical assassins, a madman with superhuman strength, and a nagging ball of light with a superiority complex who claims to be the embodiment of compassion, Aaron takes on his hardest job yet—staying alive.