Servant: was an entity of unknown origin summon by a mage, liable to abide every decree, may that be fighting.

Springtime at the Magic Academy of Albright. Celestelia bartfold got only one week 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 realization?

Anyway, what she summons is far from the servant she is aware of.