Witchcraft Works 17 (manga)

A boy, a witch, and where it all began With the crisis at the Kagari estate settled, life for Takamiya and Kagari is finally back to normal. But just as they're enjoying the school festival, a visitor that even the Chairwoman and Alcina must bow their heads to appears before them--Fulcanelli, the witch who governs all witches. Fulcanelli offers to grant Takamiya a peaceful future, but only for a price.