As usual, the five members of the Defense Department relax in Kurotamayu. The topic is that Kyotarou's words and actions are old-fashioned. The next day, I go to Brow Difficult High School as usual, but I'm surprised that Ichiroku, who is short of breath in the middle of the stairs, says "You're an old man!" I was an old man. "I was cursed because I treated Kyotarou-senpai as an old man yesterday ...?", But when I looked around, the school playground was full of students who became grandpas! ??
いつものごとく黒玉湯でくつろぐ防衛部の5人。話題は鏡太郎の言動がお爺さん臭いという話に。翌日いつも通り眉難高校に登校するが、階段の途中で息切れを起こす一六、後ろから来た太子に「お前、お爺ちゃんになってるぞ！」と言われ驚くが、言った太子もお爺ちゃんになっていた。「昨日、鏡太郎先輩のことお爺ちゃん扱いしたから呪い…？」と焦る一六だが、周りを見渡すと校庭にはお爺ちゃんになった生徒であふれかえっていた！？
Nossos heróis caem em uma magia e ficam velhos. Kyoutaro não se importa, porém Ata se irrita e demonstra seus verdadeiros sentimentos.
