Jody Parker 
Earth Sons #1 [EPUB ebook] 

There is one simple rule on H’trae: Live. Live, even though the very planet you inhabit does not. For the thief known as Aleyen, this is more than a rule, it is a law… a code. When the catlike Katawa Leeyal asks for his help, Aleyen must answer two questions: What’s in it for him? Is the reward worth the risk of placing his trust in another sentient being? Life on the broken world of H’trae starts now!