I was just doing my quests for Shinwa and then I realized that I apparently only have had quests from Maleria. Is that something that happens...? I never had quests from only one other quest-giver and just wanted to check if that's normal :D

It happens sometimes. A few days ago she kept sending me to Pete. She's choosing at random, so there's always a chance that she'll send you to one quest for all five pieces. :)

ah, thanks :) I was really confused because that never happened to me. But glad to see it's nothing wonky xD