Whaaaaaat!!! Nuuuu, you gotta watch more of it! Although I do agree, seaon one was the best season <3 In fact, you could just skip season 2. Season 2 wasn't the best tbh, and it actually doesn't follow the manga, so it's like an alternative route. Season 3 takes place after the curry contest from Season 1, and it's the true alternative that follows the manga. Then there's Book of Murder, which is like two parts. The next part to the series is a ship voyage arc (part of the manga), which should be the next arc of the manga that will get an anime adaptation. I hear there's a bunch of Grell in that arc, which is good because seasons 3 and the Book of Murder sorta lacked Grell. ;u;