Kirio Karasuma

烏丸キリオ, Glasses Guy
Kirio is the main antagonist. He is the student body president of Sakuragaoka Academy. He tests the protagonists and fights them outside the campus. Karin refers to him as Mr. Glasses Man. meganekko or Four eyessan. His only true relative is his twin sister Kirika but he does have another sister by the name of Himeka. His ring has the powers of the god Ares. Source: Wikipedia