The End of Alter Egoism

Shirayuki Lindblum, a girl without magical abilities, joined the army to avenge her mother's murder. One day, she receives a mysterious letter. Along with information about who allegedly killed her mother, the letter contains an invitation to enroll in the Iris Academy in Hinomoto. After much deliberation, Shirayuki decides to enroll in Iris Academy to learn the truth and avenge her mother.
Meanwhile, Yozuru Kurobane, a girl with extraordinary magical powers, carries the burden of a tragedy that occurred several years ago in her hometown when she lost control of her magic. She enrolls in Iris Academy to learn how to control her powers and secure her future as an agent.
Shirayuki and Yozuru, driven by completely different goals, meet and form a partnership...