This is Arela!! She is a clumsy and awkward summoner and spell user she can't ever seem to get anything right!! So essentially she is a loner and doesn't have any friends because everyone she goes to school with mistreats and bullies her until one day while out for a walk in the near by woods she come across a special book that was hidden in the stump of a very old looking tree!! She opens the book to find out what its about and gets splashed by a bright white light. Afterwards she hears a voice speaking to her and tells her that she will become the most beloved and respected Summoner and Spell user of her time!! Not sure by what it means out of a the shadows comes a demon girl that was accidentally summoned by the opening of the book she offers herself to help Arela achieve her destiny in exchange for becoming an Angel, because she doesn't want to be bad she wants to be good!!