第24話: 国連軍が黒部ダムを攻撃する中、ムエッタと健之介がエフィ・ドルグ軍と決戦を繰り広げる。

Muetta decides to fight alongside the humans to stop Efy Dolgh, so the UN troops launch a full assault against Kurobe Dam to retake the research facility. Before the battle, a more than embarassed Kennosuke proposes to Yukina to stay togheter as a couple after the war's end, and they swear to protect each other for the rest of their lifes. When the battle enrages, the Black Relic, the Gauss-1 driven by Sophie, Muetta's Medusa and the other UN's heavy machines fight with the enemy Relics in front of the base, while a small group of infantries leaded by Graham and Hiromi manages to storm inside the building and take it back without kill the parasited humans, using Zeru's datas to prevent the wormhole from complete its opening. On the outside, even supported by a still alive Sebastian, Muetta and Kennosuke manage to defeat Mirasa and Yaruba respectively, and at that point the Refill unites his Relic with Imusa's one to create a giant robot, but they're both defeated by Yukina, which must face the burden of having personally killed for the first time. Refill retires into the ship, where he tries to send an aid request into the space, but he's mortally wounded by Zeru, proving to be a clone of one of Zeru's race. Zeru uses a parasite to control a dying Refill, forcing him to complete the wormhole's shutdown, but at that point Refill reveals to Zeru, Yukina and Kennosuke that the Efy Dolgh see the humans as a menace for their empire, and that depite their victory a new exploration force will reach the Earth in 220 years to start a new conquest's attempt. (Source: Wikipedia)
話数
- 第20話 · ユキナがエフィ・ドルグの母艦に潜入する一方、ケノスケとミュエタは捕らえた秘密を持って逃亡する。
- 第21話 · クロムクロとメデューサ・グロングスが地球に帰還し、ムエッタが悪魔によって逮捕される
- 第22話 · ユキナとケノスケは学校へ退避し、エフィ・ドルグがヒンジストーンを起動して嵐を呼び寄せる。
- 第23話 · UN職員と学生が映画脚本の撮影中に危機を乗り越える
- 第24話 · 国連軍が黒部ダムを攻撃する中、ムエッタと健之介がエフィ・ドルグ軍と決戦を繰り広げる。
- 第25話 · ZeruがEfy Dolghの弱点を明かし、Kennosukeがエイリアンとの戦いに向けて婚約を解消
- 第26話 · 物語は、過去を振り返らないことで定義される侍キャラクターに焦点を当てている。