When I started watching this series I didn't know much about it but as it could be watched legally on Funimation's YouTube channel I thought I'd give it a go; I'm glad I did as it is one of the best anime series that I've seen. It is only sixteen episodes long but there isn't a moment wasted as it is jam packed with story and a large cast of memorable characters. When the cast it is first introduced in the opening credits it seems that it will be impossible to remember who is who but as they are such great characters it isn't so difficult. The great names also help; who could forget characters with names like Jacuzzi Splot, Czeslaw Meyer and Szilard Quates. The characters are a mix of immortals, gangsters and psychopaths living in 1930's America. Over the course of the series we learn how they became immortal, how they get to know each other and most importantly what happened aboard the 'Flying Pussyfoot' a transcontinental express bound for New York on board which most of the cast meet and many people die in unpleasant circumstances. Much of the series take place on the train but we also see frequent flash forwards of what happened before and what happens later, amazingly this does not lead to confusion.
The series was a lot of fun but also included violent scenes which would make it unsuitable for younger viewers; the actions of 'Rail Tracer' might give them nightmares, they made me cringe and its a long time since I was a child. The animation looks fantastic, the slight sepia tint giving it a period look and distinctive characters made it a joy to watch, it also had a great musical score to accompany it.
These comments are made based on watching the series in Japanese with English subtitles although I did see one of the episodes in English and thought the dub was pretty good.