Servant is an entity of unknown origin summoned by a mage, liable to follow every order, even if that means fighting.
Springtime at the Magic Academy of Albright. Celestelia Bartfold has only one week left to summon her own servant otherwise she will be finding her way out of the school. Can she do it? Can she achieve her dream? Can her desire come to fruition?
That aside, what she had summon was far from the servant she is aware off.