I'm a huge fan of sumo and was thrilled to hear about a sumo-themed series (and Japanese-made too!). That said, I almost quit not long into the first episode because they chose to start it off with a series of gross-out farcical scenes (which I know some people love, but for me, they're a huge turn-off). But I kept watching and I'm very glad I did. There is some really good human drama underneath the over-the-top bits and that is the element that gets stronger as the episodes progress. It's also realistic enough to keep a sumo fan satisfied - of course you notice a few things that are off, many bouts are ovedramatized (which has to be forgiven in a film) and the behaviour of some characters (the main character especially but also some of the stablemasters) would never be tolerated in real life, but that aside it's stil a wonderful immersion into the sumo world. The gruelling training, the personal rivalries, the battle with injuries, the highly emotional retirement ceremony, etc. If you're not a sumo fan but like sports dramas in general, you will probably enjoy this one (and I highly reccommend getting into actual sumo - a dramatic sport if there ever was one!) Anyway, this series made me realize how much I would love a straight-up sumo drama, without any of the farcical, over-the-top elements, and I hope they make one someday - but until then, this is actually a pretty good watch. I'm looking forward to the next season.
