Hard-to-understand? Hmm... really? Or is it the language barrier (no slight intended)? I thought that the exposition was really easy to follow.
It wasn't in any way "big" or "awesome", but good drama shows gradually build, they don't go for early effects. Take "True Tears" for example, a very successful show in whose direction White Album will probably drift (or maybe a bit of KimiNozo? One can dream): How long did it take for anything to actually _happen_?
In any case - even if I wasn't working on this show, I can say that I very much like the atmosphere already. It definitely isn't something for the happy mainstream anime viewer, but methinks that we might be treated to some delicious angsty drama