I was also wondering if this would be Sana's "first attempt". But Makoto didn't have a first attempt (or we don't know about them ) - she got there right way.
So im high and was just catching up here and thought "What are the odds that paridollea is "prime" sensei" i don't have any facts to back this up but wanted to see if anyone else can add any claims to where they might be true
also my second play-through has been put on hold for the time being, I really had a mental breakdown from this game and I am still in the process of getting through that hump but I do think that in 1 weeks time I should be able to catch up