Lamia, an ordinary girl with zero magic ability, applies for the entrance test to the Magic Academy every year in order to find her lost brother, but is rejected because of insufficient magic power.
By chance, Lamiya got a soul fragment and successfully entered the Magic Academy with it. But the owner of this fragment is Fujiu, His Highness the Soul Clan who is on the run.
The two made a contract: you will be my guardian knight and help me survive in the magical world and find my family smoothly; I will be your soul power container and return the fragments to you when necessary, even if it costs my life.
Motto: Never give up hope!