Nine Schools Competition XI is the eighteenth episode of the Mahouka Koukou no Rettousei anime.
Tatsuya takes out a branch of the No Head Dragon, as well as gaining information of it's leader. Meanwhile, First High School won the NSC, and a celebratory dance was thrown. After talking with Ichijou Masaki, Tatsuya urged Miyuki to dance with Ichijou, to which she did. Tatsuya was then approached by a few of his female friends to dance. After a while, Tatsuya withdrew from the dance and was approached by Katsuto, where they left the hall and went outside to talk about the prospect of Tatsuya joining one of the Ten Master Clans, even suggesting that he marry Mayumi. Once Katsuto left, Miyuki appeared and asked Tatsuya to dance with her to the final song. They remained outside, dancing next to a fountain.