Well, in 'the selfish demon king novel', it may tell the story of a demon king with a selfish nature. He might be in a world full of magic and different races. His selfishness could lead to conflicts with other characters, like heroes who oppose his tyrannical rule. And perhaps there are other demons or creatures who either support or try to manipulate his self - centered ways.
I'm not sure specifically as there could be many novels with such a title. It might be about a demon king who is selfish in his actions, perhaps hoarding power, wealth or territory in a fictional world full of magic and other fantastical elements.
I'm not sure specifically as there could be many different plots in such a novel. Generally, in a yaoi novel, it might involve a relationship between male characters. Maybe the selfish demon king character has his own desires and goals that are somehow intertwined with other characters in a romantic or complex relationship.
In this type of novel, the most obvious main character is the selfish demon king. His personality and actions shape the story. However, there may also be other important characters. There could be a group of rebels, perhaps led by a charismatic leader, who are determined to overthrow the demon king. There might also be a love interest for one of the main characters, whether it's for the demon king (in a more complex and perhaps dark way) or for one of the good guys. And don't forget about the advisers or council members in the demon king's court. Some of them may play a role in either enabling his selfish behavior or trying to change his ways.
I don't know the exact main characters as I haven't read it. But surely, the selfish demon king is one of the main characters. There is probably another male character who is involved in a relationship with the demon king.
Another theme is the exploration of morality. His selfish actions often raise questions about right and wrong. Is it okay for him to be so self - centered in order to achieve his goals? This theme makes the readers think about the boundaries of good and evil in a world where power and survival are at stake.
Another theme could be redemption. The selfish nature of the demon king might be something that needs to be changed or redeemed through the relationship in the story. It adds depth to the characters and the overall plot. Also, the exploration of different worlds or realms is common. Since it involves a demon king, there could be a lot of world - building around the demon realm and how it relates to the human or other realms in the story.
I'm not very familiar with specific 'selfish demon king yaoi novels'. But you can try to search on some specialized novel reading platforms like Wattpad or Archive of Our Own. There might be relevant works there.
Well, 'Re:Zero − Starting Life in Another World' has some similarities. The main character has to struggle and make decisions based on his own survival and goals, which is somewhat like the concept in 'The Selfish Demon King'. Also, 'Sword Art Online' in a way, as the main character has his own motives and ways of dealing with the virtual world which can be compared to the self - interested nature in 'The Selfish Demon King'.