The key is in a form of a human wearing a cloak almost covering most of its body. Its role is technically a key in opening Caterpillar Lane.[1] However, it perished during the incident where the Duke creates a ruckus in Wonderland.
Alice was able to enter Caterpillar Lane when he accomplishes his mission of attaining loyalty from the Queen thus, obtaining the key as his reward.
References[]
- ↑ Are You Alice? manga, Chapter 6