Missing Kinfolk

Uvela hails you, "Hello there, ____! I have a task for you, if you are interested." "A shrine exists near here; it was built around a large shard that acts as a focus, enhancing our connection with Jin. Recently, a large number of our kinfolk have disappeared, and I have reason to believe that they are drinking too heavily from that focus." "Travel to this location that I have marked on your map and try to find someone to explain the reasons behind the absence. Return thereafter."