I honestly dont think that having to get six path before you get get rewards is healthy. Climbing is really hard i lose around the same amount of matches i win. Played around 30-40 matches and i couldnt progress. Plus getting to higher ranking will me*ways facing players thats have those teams that a f2p player can`t beat at all. so ill probably never be able to get six path which means ill never get more than the first rank rewards.
How is this a balanced system? after reaching six path most players will probably just keep themselves kage to get rewards without having to do anything, and for other players climbing will be close to impossible without op ninjas.