Clear the Linked Game Hero's Cave in Present Lynna: entrance south / right of the Maku Tree, full late-game kit, eight-key puzzle route, and the final Armor Ring L-3. Optional — not required for credits.
Cave card Prerequisites Location facts Route cards Rewards Unstuck Step checklist FAQ
Mark Linked access and gear you already own. Progress is saved in this browser only.
Armor Ring L-3 is the clear prize; keys and Gasha Seeds fill the path.