First, study the existing world of Makai Ouji. Know the rules about devils, their powers, and how realists interact with them. For example, if devils have certain hierarchies and magic systems, your OC should fit into that framework. If your OC is a devil, they should have powers that are consistent with what we know about devil powers in the series.
One idea could be an OC who is a powerful mage from a forgotten lineage. They could be brought into the world of Makai Ouji to help balance the power between the devils and the realists. Maybe they have a special ability that can temporarily nullify devil powers, which makes them both a threat and a valuable asset.
I'm not sure specifically as I haven't read it in detail. But generally, a web novel often has a unique plot, characters, and a particular genre. It might be about an adventure, a love story, or something else entirely.
I'm not sure specifically as there could be various stories within it. But generally, a light novel might be about adventure, fantasy elements, or character development. Maybe it follows the journey of Dantalion in a fictional world filled with magic and challenges.
I'm not sure who the author of the 'dantalion light novel' is. There are many light novels out there, and without more specific information, it's difficult to determine the author.
Since I'm not familiar with this particular web novel, I can't name the main characters. But in most web novels, the main characters are often the ones who drive the plot forward. They could be a young adventurer seeking glory, a mage with powerful abilities, or an ordinary person thrust into extraordinary circumstances.
Well, in a 'naruto ruler of makai fanfiction', it could center around Naruto being transported to the Makai and having to rise to power. Maybe he has to face off against powerful demons there and use his unique abilities like the Rasengan and his shadow clones in new and unexpected ways. He might also have to form alliances with some of the more friendly creatures in Makai to solidify his rule.
Well, it could be about Naruto in a makai (demon world) setting, perhaps becoming a king in that realm. It might involve Naruto using his ninja skills in new and strange ways against demons and other makai creatures.
I'm not entirely sure as I haven't read it specifically. But generally, a light novel often features interesting characters and unique storylines. It might be about a 'tensai ouji' which could be translated as 'genius prince'. It could involve his adventures, his struggles in a fictional world, or his relationships with other characters.
Since I don't have a deep knowledge of this particular novel, it's hard to say precisely. However, based on the title, it may tell the story of a prince. The word 'eiyuutan' might imply a heroic or epic journey. So, it could be that the so - called 'akuyaku ouji' is on an unexpected heroic journey, facing his inner demons and external enemies, and growing as a character throughout the narrative.