It is confusing in the beginning, too much character and name to remember to start a story. Maybe it is fine for them who follow all the series but not ok for who didn't, like me, hehe.
But the story improvement is quite good, not too fast or too slow. Even though I hope Trip will be the bottom, ehe, sorry Trip, because he seems more delicate and compose than Luk. The character itself, have a unique and good structure, I mean, one character is different than the other. So you could remember them and didn't mistook them for someone else.
Also the problem we faced here is really complicated. Luk want to be with his mate and save his family but on the other side, he have to face his own brother, his pride, and his pregnancy. This one of a good story to enjoy IMO. Especially if you're a fan of science fiction, scientific things, and hot (handsome) alien love story. But for me, I like the wildness that Kiki gave in other series more. It feels more touching, thrilling, and close to me. So, I will give this story a 4 star :)
Good job for the authors!