Mahouka Koukou no Rettousei - Ichijou Masaki Tenkou-hen

Synopsis:

The Ten Master Clans Conference is bombed by terrorists. Ichijou Masaki, the Crimson Prince and eldest son of the Ichijou family, one of the Ten Master Clans, temporarily moves from Third High School to First High School in order to look into the occurrence. This also entails him and Shiba Miyuki, the deity he worships, becoming classmates. An extension of Mahouka Koukou no Rettousei Shizoku Kaigi-hen's main plot