This was an interesting story where space exploration is achieved through highly advanced locomotives. The SDF is a police force of sorts that protects those on the railways.
Story 7/10: I liked it for the most part considering like I mentioned the space traveling was done by trains which is different. But the rest of the story was somewhat typical and for half of the series i thought it was slow paced. Towards the end an alien force tries to wipe out the railway system because of angst over there lost planet and they decide it's travelers fault. Which isn't the most original concept.
Art 8/10: it was well detailed with faces and shadowing however proportions were off. Minor detail but the old lady and cats eyes bothered me to no end!
Sound 7/10: I watched the dubbed version and minus the main character's voice actor Chris Patton a lot of the voices irked me.
Character 8/10: they were well developed and you could feel the relationships everyone had on Big One pretty well.
Enjoyment 8/10: it was a nice watch but I did have a tendency to stray my eyes from the screen, meaning it didn't hold my attention...
Overall 7/10: it was good and I would recommend it but there are some negatives in my eyes.