As you travel through the 9 realms of Norse mythology, you had run into the Valkyries of the Aesir, only for them to reveal to have been corrupted and vicious. You had managed to slay the first one you encountered, but her spirit had arisen, asking you to free her sisters, then take their helmets to their thrones in a secret alcove on the Lake Of Nine.
You managed this immense feat after several grueling months and come face to face with their queen, Sigrun. But like the others, after much combat, she too had fallen. Suddenly, 9 lights descend as the very same Valkyries you had just slain descend, only... lighter. You become nervous for another fight, only for them all to... BOW to you.
Sigrun: Brave warrior.... Thank you, friend. You have saved the Valkyries. Countless winters, we have served the All-Father, but only through his union to our former queen Freya did we ever taste some measure of freedom. When Odin severed her wings, I served in her absence, but it wasn't enough... He used an archaic, horrible magic to corrupt my sisters. I tried to imprison them before they could bring harm to anyone, but I soon fell as well... looks at you But now, we can restore balance to the realm. And YOU have the eternal blessing of the Valkyries and we are in your debt.