You only got to see that conversation if you went back to Hama's house in Contingo again after you reunited the two parties, so it was easy enough to miss.
In any case, Sol and Luna could be light and darkness rather than hot and cold, which would mean that Venus and Mercury are the Luna elements. Either way, it's interesting to note that the Umbra elemets have more healing psynergy than the Sol ones in both cases.
In any case, Sol and Luna could be light and darkness rather than hot and cold, which would mean that Venus and Mercury are the Luna elements. Either way, it's interesting to note that the Umbra elemets have more healing psynergy than the Sol ones in both cases.