Season 1 is a anime remix of the series one and two. The reviewer who complained about the exposition dumps apparently remembers season 1 of the live action differently than I do. They used to stop and tell each other things like this all the time.
The anime has the standards conventions - people change hair color to suit the environment (although I am saddened that Sam's hair never has the emotional acting that anime hair often does.) Dean is a horn-dog with an open face, Sam is obsessed with finding Dad and The Thing That Killed Mom and Jess. He gets the classical anime hero drawing. John is the gruff, tragic father - shadowed, square jawed and 20 feet tall. The true break is Bobby who seems to be older and much fatter than he should be. The English dub would also make him from New York. You either accept these things or you do not. Anime viewers are not thrown by these.
The actual supernatural elements are actually better than the series. The gore factor certainly gets a boost. The anime is the Winchesters driving into a different ghost story every week. It was a blast to visit and if you like season one and two, you should definitely watch.
