Have you ever seen this kind of lock? I came across this chest I had stored away, and I just can't open it.

I remember seeing a peculiar device in Tezz's House. There was a ring of keys hanging from it, so perhaps it can open this lock.

Since I don't have any use for this, you can keep the chest if you unlock it.

Player: Accept.

(A life-sized Shugo figure stands on this unusual table, skeleton keys in one hand and a mallet in the other.)

(Perhaps this Lockbuster can open the chest Aruza gave you.)

Player: "Hope there's nothing fragile in here."

(The chest is unlocked. You eagerly take out what's inside.)