One great 'marriage of convenience' story is 'The Proposal'. In this movie, Margaret Tate (Sandra Bullock) is a Canadian executive who faces deportation from the United States. She convinces her assistant Andrew Paxton (Ryan Reynolds) to marry her for convenience. Their relationship starts off purely as a business deal but gradually evolves into real feelings as they get to know each other better during a trip to Alaska. It's a heartwarming and humorous take on the concept of a marriage of convenience.
Convenience marriage manga often features unexpected pairings and the development of emotions over time. The plot usually involves challenges and growth for the characters.
One that often comes to mind is 'Beauty and the Beast' (in its novel form). Belle is sort of in a situation where she has to stay with the Beast, and over time their relationship develops. It can be considered a type of marriage of convenience as she is there not because of initial love but due to circumstances. Additionally, in 'A Kingdom of Dreams' by Judith McNaught, the main characters are brought together in a marriage that is more about politics and power at first, but love blossoms later on.
Well, Spy x Family fanfiction can be really interesting. Some fanfictions might explore different relationships between the characters in more depth. For example, they could focus on the bond between Anya and Loid in a new situation that wasn't shown in the original manga or anime. It's also fun to see how authors play with the spy and assassin themes in unique ways.
Spy x Family manga has wrapped up. It provided a conclusive and fulfilling storyline that wrapped up all the loose ends. Now you can binge-read the entire series without any interruptions.