Myserious guest summoned by Theodore’s experimental magic circle.
A black humanoid creature who doesn’t speak a word. Has long fingers and glowing white eyes.
In order to help Alice go back to where she came from, Deemo plays the piano. His music allows a magical seed to keep growing. The hope is that one day, this seed can grow into a massive tree that reaches the skies.
He is very kind to both Alice and the Masked Girl.

This is the world inside the mirror.
If you want to know more, please go ask the Masked Girl.