Miyako Muguruma is a Valkyrie stationed at Tateyama Air Base, piloting a magically enhanced Nakajima Ki-44 aircraft. She possesses long black hair tied with a prominent red ribbon and purple eyes, typically wearing a black-and-white outfit and carrying a katana on missions. Characterized as impulsive, hot-blooded, and cheerful, she actively works to maintain high morale among her comrades, prioritizing collective optimism even during dire circumstances. Her energetic disposition provides consistent emotional support to squadron members during combat operations or interpersonal tensions. Her narrative involvement includes participation in the large-scale assault against the Fuji Pillar. During this operation, she witnessed the death of veteran Valkyrie Yayoi Amatsuka, with whom she shared a close personal bond demonstrated through their affectionate reunion earlier. Following the failed offensive, she contributed to recapturing Tateyama Base and later defended it against an emerging Pillar threat while Sonoka Watarai resolved personal conflicts. In humanity's final confrontation with Odin, she destroyed the Fuji Pillar's core after the revelation of Odin's deceptive motives concerning Ragnarök. In the aftermath, she participated in ceremonies honoring fallen allies and welcoming new Valkyries before embarking on subsequent assignments. Her surname incorporates the characters for "six" (六) and "car/vehicle" (車), while her given name translates to "temple/shrine/palace" (宮) and "old/antiquity" (古).