Kneel! My Wife Is the Valkyrie!

The leader of the Valkyries marries a mortal out of gratitude, only to be betrayed by her human husband. On a whim, she hastily weds a crippled outcast who walks with a cane—until she discovers he is the God of Light, whom she cast down to the mortal realm ten thousand years ago. Worse still, the child growing in her womb holds the sole hope of surviving Ragnarök.