Stoic and scary, Natsume may be icy on the outside but is actually fiery on the inside. Born with the Flame Alice, Natsume is expectedly hated and feared by many students and teachers because of his dangerous ability. Natsume is often seen with his best friend, Ruka. Other than Ruka and Youichi, the fire starter didn't really get along well with the others until Mikan came along. At first, her optimistic nature was like a poison to him but gradually, he softened up to her and going as far as developing romantic feelings for her. Natsume's past is shrouded with mystery and nobody really knows what goes on in his mind. But one thing is for sure, he is extremely suspicious of the adults in the academy. He is involved with the school's secret missions for reasons unknown. Though he really doesn't like doing it, the threat to endanger his classmates and especially Mikan's welfare forces him to be at their mercy. They do that because they know that Natsume would give his life for her.