Love development. Usually, the couple starts off not knowing each other well in an arranged marriage, and the story focuses on how they gradually fall in love. For example, in many books, they start to notice little things about each other that are endearing.
Often, there's an initial awkwardness between the characters. For example, in many such books, the couple might not know each other well at first. Then, there's the slow - burn of falling in love. It's not instant like in some other romances.
One great 'enemies to lovers' fantasy novel is 'A Court of Thorns and Roses' by Sarah J. Maas. It has a great build - up of the relationship between Feyre and Rhysand. Another is 'The Cruel Prince' by Holly Black. The dynamic between Jude and Cardan is full of tension and eventual love. Also, 'Shadow and Bone' by Leigh Bardugo has some elements of this trope as well.
Some excellent 'enemies to lovers' fictions are 'Cruel Prince' by Holly Black. Jude and Cardan are enemies in the faerie world. Jude is a mortal living among the faeries and Cardan is a cruel prince who bullies her. But over time, their relationship changes into something more passionate. 'The Cruel Prince' shows how power dynamics and initial hatred can transform into love. Also, in 'The Vampire Diaries' book series (although it has a TV adaptation too), Elena and Damon start off as enemies. Damon is a vampire who seems menacing to Elena at first, but as the story unfolds, they develop a deep and complex relationship that has elements of love despite their initial enmity.
One great enemies to lovers light novel is 'Red, White & Royal Blue'. It tells the story of a prince and the son of the US president who start off on the wrong foot but gradually fall in love. Another is 'The Hating Game', where two co - workers who constantly bicker realize they have deeper feelings for each other. 'Pride and Prejudice' can also be considered in a way, as Elizabeth and Mr. Darcy initially dislike each other due to pride and prejudice respectively, but then come to love one another.
In the movie 'The Princess Diaries 2: Royal Engagement', Mia and Nicholas start off as enemies. Mia is a bit clumsy and new to the royal world, and Nicholas is set on inheriting the throne. He sees Mia as an obstacle at first. But as they have to work together on various royal duties, they start to understand each other. Their little arguments and bickering turn into affectionate banter, and in the end, they fall in love.
Start by establishing a strong conflict between the characters that makes them seem incompatible. Then, introduce situations that force them to work together and gradually reveal their hidden vulnerabilities and commonalities.
One popular arranged marriage fiction book is 'The Arrangement' by Mary Balogh. It beautifully depicts the relationship that develops between the two main characters in an arranged marriage situation.
Definitely 'Pride and Prejudice' by Jane Austen. Although not strictly an 'arranged marriage' in the modern sense, the concept of marriage for social and economic reasons, which was common in that era, is a major theme. Mr. Collins' proposal to Elizabeth, which was more of an arranged - like situation, is a key part of the story.
One great novel about arranged marriage is 'The Henna Artist' by Alka Joshi. It tells a story set in India where the main character's arranged marriage has a profound impact on her life journey.