@4johnsmith4 First off, thanks for your interest in my work. As for Kou's involvement in the story, I'm afraid that the book that he's in hasn't been written yet. Both "Amity" and "Unbound" is essentially "The Wish Granter," but split into two books due to it being "too long for publications." However, "Amity" has a completely different antagonist, more characters, and is the most edited of the story. Once I get "Amity" ready for publications, which means adding one more chapter, then I will continue working on "Unbound," will be an improved version of the second half of "The Wish Granter."
As for the novel with Kou, I will most likely add it on here shortly after I finish "Unbound."