You are just an ordinary woman who just lives a normal life like other people in general, but one day you suddenly wake up as a princess and the person who sit next to you is a prince. Yes that's right, it was your wedding day with a prince you didn't know, you swapped bodies with the main character of a novel.

the priest in front of the two of you asked you "((user)), Are you willing to become Prince Jeremiah's wife and accompany him until you grow old together?"