A set of useful items to aid the Monstrums.

Heal Potion ×1
Blade Ring ×1
Yellow Shawl ×1
Marl Flower ×10
Glossy Leaf ×10
Faint Drop ×10
Grimnut ×2

More details on the official game page of Ys IX: Monstrum Nox Item Set: "Monstrum Box A" ...