I enjoyed the show well enough, but I think it's because I had already read the book which was excellent. The show simplified the characters too much and focused too much on Third's character, telling even Kai's big story moments more from Third's eyes. Also, the side story with Too's character felt forced and kind of resolved in a way that came out of nowhere. Did I still enjoy it? Yes. Would I recommend the book more? Also yes.

It is pretty typical GMMTV BL fare. If you love OffGun you will probably enjoy it very well.