第 3 集: Akira 加入 Junki 的班級，同時隱形敵人發動攻擊，Junki 則苦於無法召喚 Reideen。

3

A new girl, Akira Midorino, joins Junki's class. At first he is attracted to her, but when he hears that her reason for changing schools was connected with the incident in Miyanobe Village, a sad feeling starts pervading his heart. Meanwhile, peace is again interrupted by the coming of a new, invisible enemy that leaves destruction behind its passage. Junki calls Reideen, but he falters and can't fade-in with the golden titan as images of Akira and the battle in Miyanobe flash across his mind. But his opponent has no hesitation... (Source: Production IG)