One of the biggest assets of the Anime is the natural humor of the characters and the good chemistry that each of them plays. Setting aside the characters, the story is also a top notched, the anime is missing several pieces if you'll read the original manga but that's not a definite fact to hate the anime. It's probably much better if it was completed as part of the series but removing it in there doesn't make it inferior.
I would say that the story is paced really slowly and it would take a couple of episodes to like it. It's safe to say that you need to patiently watch 13 continuous episodes for anti-sports anime to like it and let the natural humor kick in. Sakuragi Hanamichi is the main character of the show and if you're a basketball fan then you might seen some resemblance to the popular NBA superstar, Dennis Rodman as the anime progress. Other characters are definitely appealing and the way it shaped the anime was never been good if Rukawa Kaede, Hisashi Mitsui, Miyagi Ryota, Akagi Tekonori didn't exist.