Back in the day
In this Final Fantasy XVI walkthrough, we'll explain the full path of the "Back in the days" quest from the Act I.
After talking to the old man, head west past the merchant to see the well and start a scene. Then go and talk to two villagers to ask about the man. You'll find the first villager, a woman, just beside the well. The second villager is at the bottom of the stairs to the east of the well.
Go west of the Obelisks of Eastpool to find Patrick in front of the bridge. He will tell you that the old man may be lost outside Eastpool.
Cross the bridge to the large farm and enter the path to reach a dead end. After the scene, Mud Dauber will attack you. These are flying enemies, which can be hit using Phoenix Eclipse. Worgens reinforcements will arrive once you've eliminated them. Once the enemies are eliminated, you will start a cinematic and obtain 40 EXP, 100 ability points, 1000 gils, 10 Magicked Ash and 1 Meteorite.
You can now pass through the north-western wooden gates into The Dim. Go straight ahead to find a Potion and a High Potion on your way.
Continue forward to activate an Obelisks and start a scene. Now head to the Ruins of Phoenix Gate Fort to complete this FFXVI quest.