Contract Marriage: Rewritten

I thought we were signing divorce papers. He was handing me a marriage bed schedule.Despised for her weak elemental powers, Princess Laniakea accepted a political marriage to Hyperion—a powerless First Prince stationed on the frontlines. For three quiet years, they shared nothing more than a blank marriage contract and a few formal dinners a year.Laniakea was ready to pack her bags the moment another prince took the throne. But when all three rival princes die overnight, Hyperion claims the crown—and returns to the palace with a serious demand."Let us hurry and sign the divorce agreement," she says. "A son or a daughter doesn't matter, let us hurry and have an heir," he replies.Wait... weren't we on the same page?!