If We Don’t Get Married, the World Will End

Leona, the first woman ever assigned to the Special Forces Central Division, finds herself partnered with her mischievous academy rival, Regan Crawford. Though they never quite got along, their lives take a sharp turn when they’re suddenly approached by an angel named Sylphion, who delivers a shocking revelation:
Their future child is destined to defeat the Demon King and save the world.
Having kept their distance for years, both Leona and Regan firmly declare that if marrying each other and having a child is the only way to save the world, they’d rather face the Demon King themselves.
Baffled by their stubbornness, the angel stumbles upon the concept of dimensional streaming and seeks help from the constellations. Amused by the chaotic chemistry between the two, the constellations decide to intervene, orchestrating romantic scenarios across the multiverse to make them fall in love.
But things don’t exactly go as planned...