Like his earlier work "Serial Experiments: Lain", "Haibane Renmei" starts out apparently slow, then builds like the proverbial snowball to an astonishing finish.
The web of drama and mysticism in this series has to be one of the tightest I've seen in anime. Almost every conversation reveals, in the most subtle manner, the hopes and fears of the characters involved. At first, the town of Guri seems to be an idyllic paradise. Then...
This is "real life". We get to know the characters in "Haibane Renmei" like we do our own co-workers and neighbors: one encounter at a time, day by day, each day a little more revealing than the last. For some of us, our life goals and beliefs about God take years to understand; it is the same for Rakka. "What are the Haibane?" is a question that is asked, and never quite answered, throughout the series. That's the point. It is up to us to take in all the information and decide.
This series is not for mecha-lovers, or for impatient action fans, or for anyone who can't sit still for 13 episodes without a building blowing up or a legion of aliens taking over. This is a series to ponder. Like life, it must be experienced forwards, but can only be understood backwards. That is why multiple viewings are common among HR fans: there are so many layers to delve through.
We start, as Rakka does, confused as to where we are, what our purpose is. We experience incredible highs and devastating losses. We find friends who know what we've been through, and other well-meaning people who love us despite our weaknesses. We don't quite understand some of the processes, the "ground rules", of the world around us. And we learn that the world is not always a safe place.
Probably one of the most "human" animes ever produced.