謎の未来猫ヌルさんの猫科学で、『ハイカラ浪漫団』となり地球征服を目論む怪人をみごとに撃破した防衛部の５人。そんな彼らの前に現れたのは、謎のプレーリードッグことマスター・キャンに導かれし地球征服部、『蛮華羅新鋭隊』。その正体はなんと、黒玉寮の同居人にして眉難高校生徒会――百目鬼珠闘麗斗、乳頭左門、猫魔祐の三人であった。敵と味方が一つ屋根の下、これで何も起きないはずがなく……？（特に起きない）
With the help of the cat science of the mysterious future cat Nuru, the five members of the Defense Club have become the "High Color Romantic Troupe" and have successfully defeated the monsters plotting to conquer the Earth. Then, before them appears the "Bankara New Elite Corps," an Earth Conquest Club led by the mysterious prairie dog Master Can. Their true identities are none other than the three members of the Meinan High School Student Council, Doumeki Jyurito, Nyuto Samon, and Nekoma Yu, who are roommates in the Kurotama Dormitory. With allies and enemies under the same roof, it's inevitable that something will happen... (Nothing in particular will happen)
