かつて大いなる危機より地球を守り抜いたヒーローがいた……。そして今、再びの危機に眉難高校『地球防衛部』より新たなヒーロー爆誕！ ……え？ かつてのヒーローって誰だって？ そりゃ『あいつら』ですよ『あいつら』。……え？ なんで名前をぼかすのかって？ そこはマルチなバースな設定なんでゴニョゴニョ……（うやむや） とにかく新たな防衛部――雲仙新九郎、酸ヶ湯愛琉志、卯花惣輔、長万部潮、阿蘇空太をよろしく！
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!
