There's 'Elf - Slave in the Demon Realm'. This novel might be relevant as it has the themes of elves in a situation related to demons, perhaps in a way that's comparable to your description. It often delves into the struggles and growth of the elf character in that context.
One similar light novel could be 'The Demon King and His Elf Bride'. It also involves a relationship between a demon - like character and an elf, with elements of power dynamics and adventure.
A possible plotline could be the demon taking the elf lord as a slave for some strategic reason. Maybe the demon wants to use the elf lord's knowledge of elf magic or their influence over the elf kingdom. Then, as the story progresses, the elf lord might try to escape or find a way to turn the situation around.
There are also some lesser - known light novels that touch on elf - related themes. For example, 'The Rising of the Shield Hero' has a diverse range of characters from different races. While it's not centered around 'elf slaves', the elves in the story have their own storylines and relationships with other characters. It's a great read for those interested in fantasy light novels with multiple races involved.
Well, I haven't read this particular 'Foul Mouth Demon Lord Elf Bride' light novel myself. However, you could also look for reviews on websites like Goodreads or Reddit. There might be readers who have already delved into it and can give you some insights. Maybe search for related tags or threads about it on those platforms.
One similar light novel could be 'Grimgar of Fantasy and Ash'. It also has elements of adventure and complex character relationships in a fantasy world. Another is 'Overlord', which features a powerful protagonist in a game - like world filled with various races and power struggles.
One similar light novel could be 'In Another World with My Smartphone'. It also has elements of a protagonist in a different world with various interactions and relationships. Another one might be 'Overlord', which features a powerful main character in a fantasy world with his own 'followers' of sorts. And 'Konosuba' is also a good choice as it has a comical take on the isekai genre with a group of misfits adventuring together.
One similar light novel could be 'Raising a Devil'. It also has the theme of taking care of a non - human entity in a somewhat domestic setting. Another one is 'My Daughter is a Dragon!', which shares the idea of having a unique and powerful being as a daughter - like figure.
There's also 'Maou no Hajimekata'. It delves into the journey of a newly - appointed demon lord, showing his struggles, his attempts to build his power, and the complex relationships he forms with the various races in the fictional world.
I'm not sure specifically about 'ovwe lord light novel'. But some popular light novel series are 'Sword Art Online' and 'Re:Zero − Starting Life in Another World'. They both have interesting storylines, complex characters and engaging worlds that might be to your liking if you like light novels in general.
There is 'Demon Lord's Ascension'. It shares some common themes with 'supreme demon light novel' such as the power - seeking journey of a demon - like character. The story is full of battles and strategic elements as the protagonist climbs the ranks of power in a world filled with magic and other races.
Sure. 'Overlord' is a great one that features a powerful character in a similar vein. Another could be 'That Time I Got Reincarnated as a Slime', which has elements of a powerful being in a new world like in 'Demon Lord Diablo' light novels.