After you clear 9 stages in survival trial, practice breakthrough opens. I have wondered about the probablity rewards here for a long time.
In my experience till now, I have never ever got anything out of those probability rewards boxes. While the initial 12 stages in survival give plenty of chances for ninja frags or awakening material.
Is it supposed to be that way? is that sign ' probability reward' just there for decoration in practice breakthrough? Is it same for you?
The extra stage that unlocks after lvl 80 in practice breakthrough, is a pretty tough battle. For me, last 2 battle always include ninja from top 10 ranking. It would be nice to have a chance for ninja fragments from there as well, similar to 12th stage in survival.