Without being deterred by the accident, the pair of Shidou and Tounan was easily defeated by the pair of Kamimon Rei and Inasae. Having obtained the right to challenge the pair of Tenchi Hitsugi and Miyamoto Shizuku, will Rei finally face the ultimate showdown!? As the sword-wielding students are excited by the match between S-rankers, a figure resembling Hayate's twin sister, Kurogane Nagi (who is currently on leave), appears at Tenchi Academy! This feels like... a sign of an incident to come!!