ニナ・クリオーネ

"Fufufu, that's right. If this is a video game, then it'd be the last boss."The principal and chairwoman of Ginran Academy, who is adored by the students. She attended Arianrhod Girls' Academy in Europe. During her time as a student there, she was named a diva. Nina is the creator of "Butoh: Cadenza", a new kind of fencing using stereoscopic images, along with various equipment and facilities which make it feasible​.[Translated and edited from the official website]