One of the best thing about the series is the characters. Each character is unique and very interesting. Yusuke Urameshi is the main character of the series, he was a delinquent at the start of the series, but he is the character that gets the most growth and development. Kuwabara is the 2nd protaganist, has a somewhat friendly rivalry with Yusuke. Hiei is a demon that started off as a villain at first, but then as the series goes on he becomes more of a good guy, due to Yusukes influence. Kurama is the most chill out of all of them, and like Hiei, he is also a demon. Each of the characters have some interesting character development, . It's impossible to not like the characters if you were to watch this anime.
Another very good thing about Yu Yu Hakusho, is the story arcs. The first saga is introducing everything and all, but the series really starts to get interesting in the beginning of the Dark Tournament saga ( or maybe a couple episodes before that ). The Dark Tournament arc is one of the greatest arcs of all anime and manga. The action is very good, and each and every match of the tournament is suspenseful, along with the fact that the arc has an awesome villain Toguro. The Chapter Black arc is also a 10/10 hands down. Most people say that the final arc (Three Kings arc) wasn't that great due to it being rushed, but in my opinion it was decent. The series would've been even better if the 3 kings saga was just a bit longer.
The animation isn't top notch and it's a bit outdated, but the fight scenes are very good. At some moments the animation is very good (yusuke vs kamiya) but sometimes it doesn't look that great. I still give the animation a 7/10 though. I don't need to make a separate paragraph for sound, so i'll just say this: the OST's and the opening are 10/10.
Overall this is a very good anime, probably the most enjoyable anime i've ever watched in my life. I highly recommend it for anyone looking for a good Shounen series.
