Echoes of the Golden Country - Dungeon Meshi

After decades, Inna, an elf with a fractured soul, returns to the island where a dungeon linked directly to her past now lies. She intends to fulfill an oath and save an old friend, fearing that he will suffer the same fate as her, but quickly realizes that the place and its secrets have changed beyond her expectations. Soon, the place she believed she knew becomes a tangled maze full of monsters, revelations and decisions that will put her past and promises to the test.