Mujika (or Musica) is a demon descent traveling in the forest outside the Grace Field House.

Spoiler

She saved Emma and the other orphans of Grace Field House from the pursuing demons. She, together with Sonju believe in a religious principle to not eat humans.

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She is considered the "Evil Blooded Girl" because if her blood is consumed by a demon, it will make them be able to not eat humans and still keep their form

Mujika has long, purple hair braided pigtails covering parts of her horns, and wears a mask with two holes positioned vertically. She has a pale complexion and wears a bluish-white cloak.

Spoiler

She later is crowned as the new Demon Queen