Senyoku no Sigrdrifa: Rusalka  

Warlords of Sigrdrifa Rusalka, 戦翼のシグルドリーヴァ Rusalka

The Earth is facing a threat from unknown alien entities called pillars that are draining the planet of its life energy, turning large areas into deserts. The Valkyries, blessed by Odin, are humanity's only hope in this battle fought in divine machines that soar through the sky. Despite their support, the situation on the European front remains dire, with little hope in sight. Rusalka, one of the chosen warriors, is determined to turn things around and save humanity from extinction by taking back control of the skies.

Senyoku no Sigrdrifa: Rusalka was published in English as Warlords of Sigrdrifa Rusalka by Yen Press under the Yen On imprint as a 2-in-1 omnibus volume on May 24, 2022.