Dressed as a Princess, but Her Husband Turned Out to Be a Countdown

The survivors of the apocalypse are reborn and are trapped in a death cycle where the prince suddenly dies. The first six times, she tried her best to survive, but failed every time. The seventh time, with the memory of her six deaths, she walked up to the sickly prince who never accepted his fate and fought in despair: "Your Highness, I know all your failures. This time, I am the one who counts you in your way of survival."