Hiya~
So, I only just started B1 some days ago(I'm late to the party, I know. Please don't sue me!), pree good so far, overall. I don't know how far you go back to check dialogue or anything else within your game, but since starting, I've noticed quite a few discrepancies with grammar(repeating words, misplaced words, wrong tense, etc.) and whatnot. There was also a point in time where the name for the person talking didn't match up with who was actually talking(Sayumi was labelled as Yukine talking at one point, for example).
I have no clue about B2 as of yet. Might see me come back again after I've had time to check it out. I expect to be hooked in further from the story continuing from it, though. You've got yourself a new sprouting fan~
But, uh... yeah. That's basically all~