The two protagonists are destined to be husband and wife, but they don't always love each other. After thousands of years of reincarnation, the two of them had no choice but to come together because of the rebellion...
It's not just western fantasy, elves, devils, etc. I also like Taoism, but when choosing a category, I had no choice but to choose fantasy (after all, there are more of them). The concept of another world actually comes from the "Three Thousand Worlds" of Buddhism. I hope you all like this article^_^