There was once a hero who protected the Earth from a great crisis... And now, in the face of another crisis, a new hero has been born from Meinan High School's "Earth Defense Club"! ...Huh? Who were those former heroes? Well, it was "those guys", "those guys". ...Huh? Why did I blur the names? It's a multi-verse setting, so mumble mumble... (vague) Anyway, please meet the new Defense Club - Unzen Shinkuro, Sukayu Airushi, Ubana Sousuke, Oshamanbe Ushio, and Aso Sorata! (thetvdb.com)