Forest of Memories?
Angel showed a look of confusion. He recognized every character, but when combined, he couldn't understand them.
Laplace: "Previously, when you mentioned borrowing something from me, you mentioned a condition that you hoped this item could have some relation to the Mirror World Will."
Angel nodded, he indeed proposed four conditions at that time, among which was this condition. Ultimately, what Laplace lent was now—Shed Skin.
"Actually, when you proposed that condition, the first thing that came to my mind was the Forest of Memories. Because it's a gift given to me by the Mirror World Will."
In other words, the Forest of Memories is a manifestation of the Mirror World Will.
"The reason I didn't choose the Forest of Memories in the end is that it doesn't have any offensive capabilities, which doesn't satisfy the fourth condition you proposed."
