The first 6 episodes cover 4 of 8 heroes re-uniting. It starts with the background story and then moves into their respective reincarnated lives. It takes you through the journey often times with dream like sequences so that the lines between reality and illusion are a bit blurred. The animation style and music were not of the highest quality even at the time of release, but it is still done in quite a beautiful way even given the mediocre quality. The flow and progression of the story is thought provoking. This is by no means a "dumb" series in the sense that you do have to pay attention to the flow of the story or it may just go over your head.
It deals with dark themes and social issues that do not exist today. We are talking about the 1400's in this series. The characters are very human in their behavior, and they are driven by a common mystery that links them together. The spirit bead that each carries seems to draw them together, and they band together during each others darkest moments. The villain of the series leads them through a nightmarish psychological journey, and they will need the strength of all eight to complete their quest.
If you're ok with older animation styles, and you enjoy psychologically driven stories then this is a must see. Remember this is the beginning of the series. There are 7 episodes to follow these first 6. The story is really just getting started at the end of these first episodes, and the characters have a ways to go in their development. Definitely worth watching.
