Senyoku no Sigrdrifa is an anime series that blends elements of military action and Norse mythology. The story follows young female pilots, known as Valkyries, who are humanity's last line of defense against mysterious alien invaders called Pillars. With advanced aircraft and divine powers, these Valkyries engage in aerial battles to protect the world. The series explores themes of camaraderie, sacrifice, and resilience in the face of overwhelming odds.