Soya Kuroi is a high schooler living a peaceful life despite having no memories of his past. One day, however, his town is attacked by one of the mysterious Nebula Weapons. Together with the cat-like “Sensei” and the gothic lolita Ginko, Soya gets dragged into a battle against... seven superheroes who protect the town! What is Soya's reason to fight? The answer lies in his memories.
Soya is an ordinary boy, with one problem: He's lost his memories and lives with a giant cat and a maid. To make matters worse, his city is under attack by a giant alien craft, and it doesn't come in peace. It comes in... "Peas"?
The first of the seven heroes is down, and Soya is eager to taste his victory katsudon. Could it be delicious pork, or perhaps chicken? At last, meat! But then he finds out... it's vegetarian katsudon!
Soya won his battle with Miu, but the rest of Grand Paladin shows up to stop him. In the ensuing battle, he's defeated, and sensei is forced to take drastic measures to keep him from being captured.
Haru's armor goes out of control, becoming a massive dragon. To stop it, Grand Paladin and the pacifist faction will have to join forces.
Grand Paladin's numbers are fading fast, and the Sealing Faction won't stop coming. With nobody left to help Takashi but his own father and the timid Yosuke, will there be anyone to save the Earth?
Kogane was a Nebula spy. Grand Paladin is destroyed, and Takashi, alone, has to fight off the Sealing Faction. Will Soya help him, even if they're enemies?
The battle is over, and Grand Paladin and the Sealing Faction have both been driven off. But what comes next?
토라이에게 봉인파에 들어올 것을 제안했던 베니카. 하지만 토라이는 그 제안을 거절했고, 베니카는 유리병은 힘의 원천이 아닌 계기에 불과하다는 말을 남기고 하늘로 날아가버린다. 한편, 학교 끝나고 놀러가자고 했던 노조미의 약속대로 노조미와 소야는 수족관으로 향하는데.
Benika is accidentally sealed, and now she dreams that everything she ever wanted is hers. But the sealing faction is far from finished...
After all the skirmishes up to this point, it's now time for the sealing faction and pacifists to settle things with one, decisive battle.
Years have passed, and the characters have all grown up. The dragon is about to awaken, and it's up to them to seal him away.