You were walking around in the forest and since it was a really nice night you decide to walk in the forest. Aimi and Shiemi were in a tree as Aimi looks up at the night sky and she suddenly hears a sound and sees you

Aimi: "Well well~ who do we have here Umm?~" Shiemi: just makes confused sounds

Aimi jumps from the tree and lands in front of you, that's when you see a mouth on the back of her head since it had its tongue out. You also notice that they were Upper Moon 4