We can expect the continuation of the story. Maybe new characters will be introduced, and the relationship between the main characters will develop further. It could also bring more in - depth exploration of the story's world - building.
It is popular. The manga and light novel both have beautiful art and engaging writing respectively. The themes explored, like the transformation of the main character and her journey in an arranged marriage, resonate with a wide audience. Many fans enjoy following the story in either format.
The 'My Happy Marriage' light novel typically has a unique setting. It creates an atmosphere that is both immersive and distinct. Also, the relationships between the characters are complex and add depth to the story. There are different kinds of relationships, like romantic, family, and friendship ones, which all interact in an interesting manner.
I'm not entirely sure without reading it thoroughly, but usually in a story titled like this, there would be the two main characters who are in the relationship at the center of the 'happy marriage' concept.
It depends on personal preference. If you like visual art and a more straightforward story - telling through pictures, the manga is better. The manga can show the beautiful character designs and the key moments in a very impactful way.
The number of volumes of My Happy Marriage light novel is not fixed and can change. Sometimes new volumes are added over time. To know for sure, you could search on popular book platforms or check with the author's latest updates.