五 代 雄 介 的 妹 妹 五 代 稔 一 向 對 她 哥 哥 充 滿 信 心 ， 但 眼 見 古 迦 的 戰 鬥 愈 趨 激 烈 和 頻 密 ， 不 自 控 地 擔 心 起 來 。 事 實 上 ， 與 此 同 時 五 代 又 真 的 面 對 空 前 危 機 ， 墨 魚 怪 般 的 未 確 認 生 命 體 21號 竟 可 噴 出 爆 炸 液 體 ， 一 擊 破 壞 古 迦 的 護 甲 … …