For me, Hinomaruzumou is a tipical case where the anime is so unrated!
This anime has a great history and is so dificult for me believe that people doesn't like it! Because the motivation of the protagonism is so similar a motivation in haikyuu, but in haikyuu this problematic is more shallow ant don't have the same impact!
The diference is a simple thing, this anime is more realist!
The power isn't a fantatic or magic thing, is a simple moviment, but the art of this anime is so diferent and make you cry and be crazy with simple fight moviments!
The anime don't wof only with a escolar problem, and have a big impact!
Don't is a "best anime ever" because have animes as a "Hajime no Ippo" and "Ashota no Joe" but is a anime level "haikyuu" and "kuroko no basket"! With certain is a so much important sports anime!