Well, probably the theme of perseverance. The guy is trying to bring his wife back from another world, which surely won't be an easy task. So he has to keep going no matter what difficulties he encounters. And also the theme of the unknown. The other world is full of mystery, and exploring it to find his wife is part of the story.
Obviously, the husband is one of the main characters since he is the one trying to bring his wife back. And of course, the wife, even though she is in another world, she is the goal of the husband's journey. There might also be some characters in the other world that either help or hinder the husband's efforts.
The main plot could center around a protagonist who is transported to another world and decides to use his knowledge of farming to his advantage. He might face challenges like different climates, strange soils, and new species in this other world, but through his farming expertise, he starts to build a new life and perhaps even changes the world around him for the better. For example, he could introduce new crops that bring better nutrition or solve food shortage problems in that world.
The following plot can be used as reference for novels that bring the system back to another world to establish an empire and dominate the world: At some unexpected moment, the protagonist obtained a mysterious system that could grant the protagonist all kinds of powerful abilities, including knowledge, skills, resources, and so on. The protagonist used the system's ability to establish a powerful empire in the other world and dominated the world through constant wars and expansion. In the process, the protagonist met all kinds of interesting people, including other people with system abilities, strong people from other worlds, and people of different races. The protagonist worked with them to build this powerful empire and maintain its rule. In this novel, the protagonist not only had to face various challenges from other worlds, but he also had to deal with the pressure and threats from his own world and other possible enemies. The protagonist needed to work hard and struggle to establish his own empire in this foreign world and dominate the world.
The theme of growth is prominent. They start as normal individuals (presumably) and then grow into sages. There's also the theme of exploration, as they are in a new world, they need to explore it, understand its rules, cultures and magic systems. And of course, the theme of love and partnership between the couple, which is likely a central part of their journey.
I'm not sure as I haven't read it fully. But usually, there would be the main character who brings the farm to the other world. Maybe there are also some local characters in the other world that interact with him or her.
One of the main themes is exploration. The characters explore different foods from another world, which is exciting. Another theme could be discovery, as they discover new tastes and ingredients.
Survival could also be a theme. If the characters from our world are suddenly thrust into this other world, they would have to figure out how to survive in an environment with different rules, threats, and resources. This theme can add a lot of tension and drama to the story.
" I recommend the following novels to you: Red Alert's Conquest, Zerg Base in Another World, War Base, Game Base Descends in Another World, Wasteland Kingdom, Strange World: Choosing a Zerg Base at the Beginning, My Moon Base Exposed, and so on. These novels are all plots that bring the base to another world. Each has its own characteristics, and I believe it will bring you a different reading experience. I hope you like my recommendation.๐
I don't know for sure since I haven't read it. But it could be the farmer who brings the farm to the other world. Maybe there are also some local characters in the other world who help or oppose the farmer in his new farming life there.
One of the main themes is probably the clash of different cultures. Since the girl is from another world, her values and ways of life are likely to be different from those in the world she ends up in. Another theme could be self - discovery. As she navigates this new world, she might learn more about herself.