Let's open the map now and go to "Cliffside Cabin" in the Crimson Forest.
Let's head to the cellar in the adjacent room.
After coming down, head to the left. There was a Memory Flower here before; you should have some impression of it.
Come over and blast open the stone wall. Inside, there's a resource chest and a golden item.
The golden one is the weapon soulcasting material "Elegy of Parting".
