Tadatsugu Sakai, the Musashi Ariadust Academy President, is introduced to Futayo Honda, colonel of the Mikawa Guard, offering her to attend his academy soon. During the time when the students stay at the academy overnight, Sakai finds out that Yasumasa Sakaibara is found dead inside his house. With all of its inhabitants evacuated, Tadakatsu Honda and Lord Montonobu Matsudaira have started a meltdown to destroy the city of Mikawa, code-named the Genesis Project. This prompts the forces of Trés España to attack them in response. Nonetheless, Kazuno, Tadakatsu's android maid, takes out the forces unaided.