Well, still no luck getting Levitya or Fanny & Fione on my KH guy (he already has Norou), and I'm still yet to make another pass for Levitya on my Charm guy (on Nutaku, and he already has the others), but after blasting through about 5,000 kobans with my HC guy (that's this one, and I've been holding onto those kobans for this very reason), I FINALLY managed to get Levitya, completing the set at last!
Well, that just leaves my other two guys to complete their sets. I haven't been throwing my kobans away with them, and I don't really intend to, either. I'm just glad my HC guy finally has her, especially after the initial gripefest that was...... well, perhaps it'd be best not to re-open old wounds by bringing that topic up again.