Overall, Hataraku Maou-sama follows the manga pretty well. Some details might be adjusted for the sake of animation or to improve the flow, but the core story remains intact.
Yes, there are several. For example, 'Fruits Basket' has a complex web of relationships and a touch of romance similar in some ways. The story involves different characters with their own secrets and how they interact with the main character, much like in 'kyou kara maou' where the relationships are multi - faceted.
I would also recommend 'Akatsuki no Yona'. The relationship between Yona and her companions, especially with Hak, has a romantic aspect that is similar to 'kyou kara maou' in the sense that it is built on trust, mutual understanding, and shared experiences. As the story unfolds, the romance deepens in a natural and engaging way.
Another way is by exploring their pasts. Maybe they discover that they have more in common than they thought in terms of their upbringing in their respective worlds. This newfound knowledge can make them more empathetic towards each other. For instance, if they find out that they both had a mentor figure who had a big impact on their lives, it could create a bond.
Typically, maou light novels often feature a powerful main character who has maou - like qualities such as great strength or unique abilities. For example, in 'Overlord', the protagonist has a vast array of skills and powers.
Well, 'isekai maou j novel' could be a story where the protagonist, who might be a maou (a powerful being like a demon lord), gets sent to an isekai world. This world could be full of magic, strange creatures, and different races. The 'j' might be an abbreviation for something specific within the context of the novel, such as a particular label or sub - genre related to Japanese literature.