Ep. 22: Yukina and Kennosuke retreat to the school as Efy Dolgh activates the hinge stone to summon a storm.
Yukina, Kennosuke, and others retreat to the school, now the UN's HQ, after the research facility is lost. Efy Dolgh’s barrier isolates the region, preventing troop support. That night, a Demon reveals his past with Yukina’s father before his avalanche death. In the dam’s basement, Efy Dolgh uses parasited humans to excavate the hinge stone, connecting it to a ship to influence the climate and trigger a snowstorm over Kurobe. Muetta, accepting her cloned nature and fake memories, escapes the base. While searching for her, Yukina falls from a cliff. Muetta finds Yukina, and they take refuge in an old house where Kennosuke joins them. Muetta reveals Efy Dolgh plans to use the hinge stone to create a wormhole between Earth and the aliens' homeland, allowing their main army to invade and subjugate the planet.
Episodes
- Ep. 18 · Yukina and Kennosuke encounter Muetta at the hot springs before a Cactus unit abducts Yukina.
- Ep. 19 · Sophie meets Zeringer while Yukina escapes captivity and Muetta prepares to pilot Kuromukuro
- Ep. 20 · Yukina infiltrates the Efy Dolgh mothership while Kennosuke and Muetta flee with captured secrets.
- Ep. 21 · Kuromukuro and Medusa Glongurs return to Earth as Muetta is arrested by the Demon.
- Ep. 22 · Yukina and Kennosuke retreat to the school as Efy Dolgh activates the hinge stone to summon a storm.
- Ep. 23 · UN Staff and Students Navigate Crisis While Filming a Movie Script
- Ep. 24 · UN forces assault Kurobe Dam while Muetta and Kennosuke fight Efy Dolgh forces in a decisive battle.
- Ep. 25 · Zeru reveals Efy Dolgh weakness while Kennosuke ends engagement to fight aliens
- Ep. 26 · The narrative focuses on a samurai character who is defined by his refusal to look back.