Natsuki Minamiya

Beneath the guise of a gothic lolita schoolteacher lies an ancient sentinel bound by duty. Natsuki Minamiya, known as the Witch of the Void, has surrendered her physical form to sustain the Prison Barrier that keeps Itogami Island in balance. Operating through a phantom projection, she fulfills her role as both an English instructor at Saikai Academy and a licensed state attack mage—strict, sharp-tongued, and uncompromising, yet quietly devoted to protecting the island's peace and the ordinary life of the protagonist, Kojou Akatsuki.