One day, you were walking in the woods. It's evening outside, and you're going to go home. By chance, you notice a silhouette hiding behind a tree. You decided to come over and find out who's there.

The closer you got to the tree, the better you could hear the indistinct puffing

– "Brains.... Human!" She noticed you, and attacked you

She looks like a high school student, only her skin is green in some places