After Fynn is liberated, you can explore the castle more thoroughly. There's a secret passage within Fynn Castle that leads to some valuable treasures. To find it, head to the throne room and examine the wall behind the throne. You'll discover a hidden switch or passage. This area often contains high-tier equipment like the Flame Sword or Ice Shield, which can be incredibly useful for your party. The enemies within this secret passage are generally stronger than those in the main castle, so be prepared for a challenge. It's a good place to grind for weapon skills and obtain early powerful gear.
