A side story of Mahouka Koukou no Rettousei that focuses on Shiba Tatsuya's younger sister's viewpoint and experiences of the events taking place in the main story.

Is he the heroine? Is she the hero? A romantic comedy about the secret identities of a high school boy who's been transformed into a magical girl and a high school girl who transforms into a super warrior!

Hida Kizuna possesses the HHG (Heart Hybrid Gear) ability, but it is not strong enough to make him particularly important. His older sister calls him to transfer to a strategic defense school, where many of...