This is one of the sweetest animes I have ever seen. Lifted right from the pages of the manga, it takes Watsuki's story, darkens it and fleshes it out with sumptuous natural backdrops, Eastern symbolism and character development that we don't see and actually makes it even more awesome.
There were a few quibbles I had, such as the characterization of Kenshin's fight with the Yaminobu, but those are minor considerations.
Overall, Tsuiokuhen follows the manga and tells the story with vivid imagery in a riveting manner.