King of thorn is a sci-fi fantasy type thriller in which this killer parasite tries to destroy the earth. It involves a few characters, and a plot that at times, really makes no sense. Especially when it gets towards the last 20 minutes, you're like " what the hell? explain that again please?" I have never read the manga, and i really don't plan on it. I try to stay away from a lot of anime movies unless they belong to a show. But this movie i found pretty good, i mean i liked it, it had very good music which seemed to fit thestory well as the music was kind of suspenseful. The art was good, nothing to rave about but like a movie there is only so much you can do. It has a time length so don't expect to fall in love with any of the characters. But i think overall the movie deserves to be watched. it wasnt bad, it was good, and hopefully one of you will agree with me on that.