Hi ESTY, long time no see. i'll see if i can get you, you're answer for you're question. but, can you give me 2 or 3 days please? because my internet is not working well, and i will not have internet tomorrow, because the internet guy is coming tomorrow or the next day to fix my internet.
ok ESTY, since i don't have Cave or Falcom, i went searching on the internet. Cave and Falcom's Lily Rank don't affect any ending. although Cave has a special that can freeze the game, so be careful. as for Cave and Falcom's Lily rank affecting the Bedtime and Wake up call voices, i don't think it affects them in any way, but just level up their Lily rank just to be at the safe side. PS, you're name is from an Atelier character, awesome <(^_^)>