Kaibutsu ifimera ga araware, machi o hakai suru. Fūsui ga kōgeki shitai to omotta toki, totsuzen imōto no koe ga kikoe, ki o to rarete iru ma ni ifimera ni kasane wareru. Ifimera wa tekku sandā o kōgeki shita nochi, totemo shiawase-sō ni nemuri ni tsuku. Ayano wa Muromachi jidai to heian jidai ni arawareta nochi ni sugata o shō shita dai kaibutsu ni kansuru jōhō o mitsuke, sono jōhō ni notte ita kaibutsu wa ifimeradatta. Ifimera no tokusei o rikai shita seinen seiei chīmu wa hisshi ni mamoruga, bōei-gun wa yōshanaku kōgeki o shikakete kuru.
The monster Iphimera appears and destroys the city. When Fengchui wants to attack, he suddenly hears his sister's voice and is attacked by Iphimera while he is distracted. Iphimera seems very happy after attacking Tek Thunder and then falls asleep. Ayano finds information about the big monsters that disappeared after appearing in the Muromachi and Heian periods, and the monster in the information is Iphimera. After understanding the characteristics of Iphimera, the Youth Elite Team desperately protects it, but the defense forces start to attack mercilessly.
