Since this isn't a widely known novel title that I'm familiar with, I can't tell you the author. It could be an indie author or someone just starting out in the writing world. There are so many novels being written every day that it's difficult to identify the author without more context.
The cultural references in science fiction can be difficult to translate. A story might reference a particular historical event or a cultural icon from the author's home country. Translators need to either find a similar reference in the target culture or find a way to explain it without losing the essence of the story. For example, if a science - fiction story in the US mentions the Apollo moon landings as a reference for a future space exploration mission, a translator into a language of a country with no such space - faring history needs to be creative.
Perhaps it's about how love, while a powerful emotion, is often insufficient to sustain a relationship without other elements like mutual respect, understanding, and communication. In the novel, the characters might face situations where their love is tested, and they realize that just loving each other isn't enough to keep the relationship intact.
I'm not sure as I haven't read the novel specifically. But usually, in a novel with such a title, there could be a couple. Maybe a man and a woman who are deeply in love but face challenges that show love isn't sufficient.
The main theme could be the complexity of human relationships. 'Love is never enough' might imply that other elements such as trust, respect and communication are also crucial in a relationship. In a Chinese novel context, it could also be related to cultural values and how they affect the perception of love. For example, filial piety might sometimes conflict with personal love, making love not sufficient on its own.
I'm not sure who the main characters are as I haven't read the light novel. But they could be two young lovers who are facing challenges in their relationship.
The main theme might be about the complex nature of love. It could show that love alone doesn't solve all problems in relationships, perhaps exploring how other factors like communication, trust, and personal growth are also crucial.
The Twilight universe has such rich characters and a complex world. Fanfictions in this category can explore different aspects of the relationships and the story that the original might not have fully delved into, which is really appealing.