Honestly this was a pretty good episode for what it's meant to be, a short recap of Chaos;head so that some of the important events from it are in your mind before seeing Chaos;child, which revolves heavily around the events from Chaos;head. Obviously this recap leaves out a lot, including many characters, di-swords and more. That said, it's a one episode recap. It's not presenting itself as anything else, and it's not meant to retell the entire story of Chaos;head. Because of that, I really don't have that many big problems with it. We all wish it was longer and didn't leave out as manydetails, but no one should really expect that much of it. It's a solid recap that gives most of the information that you really "need" before seeing Chaos;child. For that reason I don't hate this episode at all and I recommend watching it if you want to watch the Chaos;child anime, there's really no downside to it. Obviously if you want the full story for both Chaos;child and Chaos;head just read the VNs though.