dandan said: so, I'm guessin there may be very subtle and almost impossible to see hints for this pairing, right?
It's not very subtle. It's not outright stated either, but it does get boob-grabbingly blatant sometimes, to the point where you start thinking it might not just be you daydreaming. The amount of "unusually affectionate for a non-romantic couple" involved here reaches beyond Riku and Sora levels.
Why does this have the "sisters" tag? Fang and Vanille are not sisters.