After watching some rugby animes like All Out!!, Try Knights and Number24, and as a rugby player, I can completely confirm this is the best rugby story in a manga/anime so far. Its a shame they ended this manga too soon beacuse it had a really big potential, exploring some aspects of rugby, like rugby 7, that other productions didnt even matter to talk a about it. Its true that is has some similarities to Haikyuu, but at this point I think its really hard to create a really good sport story and not founding something similar to Haikyuu, so dont let that idea discourageyou from reading this manga.