Transmigrating with a Pocket Dimension to Become a Substitute Bride

Somehow, she transmigrates into becoming a prince’s contracted bride, only to unexpectedly run into her ex-boyfriend, who is powerful and unafraid of the nobility. Between working hard and choosing to lie flat, she decides to cling to his coattails. Unfortunately, if she wants to return to her own world, she has no choice but to complete the tasks assigned by the space.