It was a pretty serious anime, tone was in between cowboy bebop and ghost in the shell. there wasn't magic just si-fi. the fighting was in space using there space craft similar to cowboy bebop. the artwork was also realistic, the cats weren't cartoony, however, when they were in their individual space craft they had a translator so humans could understand them. It was a darker color theme but I can't really remember to much about what anyone looked like. I do remember that the boy would walk with his hands crossed behind his head, kinda like how naruto does sometimes.