During Chapter 29, DO NOT take the items found in treasure chests (Gurak Doll, Pot, Comb). The following items are required for a quest starting the Epilogue. 'If you do take these items, you can not do this quest.
During the epilogue, there will be a Gurak woman next to the fountain at Castle Gate Plaza, a Gurak man near one of the shops in the Market, and a little Gurak girl standing in a corner in South Gate Plaza. Talk to them once each. Then warp to the Gurak Castle and find their lost belongings. Return to each of them.
Note: If you did take the items and you talk to them, they will think you're one of bad knights that looted their home.