I'm not sure specifically as there could be many novels related to billionaires. It might be about the life, rise to wealth, business adventures, or love stories of billionaires.
The main characters in a 'billionare novel' could vary greatly. There may be the billionaire entrepreneur who is the protagonist. Then there could be the shrewd investors or bankers they interact with. There might be a journalist character who is trying to expose the secrets of the billionaire's empire. And not to forget, there could be the friends from their early days who either support or betray them on their journey to billionaire status.
One great billionaire brothers romance novel is 'The Billionaire's Secret Love'. It tells the story of a young woman who gets involved with two billionaire brothers in different ways. The love triangle creates a lot of drama and passion.
The power dynamics. Since they are billionaires, there's a certain allure of power and wealth. For example, they can sweep the heroine off her feet with their luxurious lifestyles.
The Billionaire Boys Club story is about a group of rich guys who thought they could do whatever they wanted. They were involved in various high - end business deals on the surface, but behind the scenes, there were a lot of shady activities. They used their charm and money to manipulate situations. But as investigations deepened, it was revealed that they were defrauding investors and causing financial harm. This led to a series of trials and the end of their carefree, illegal operations.
One key aspect is the excessive wealth and privilege of its members. Another is the illegal financial activities they carried out, like fraud. Also, their sense of entitlement that made them think they could avoid consequences.
Yuri manga focuses on romantic or emotional connections between female characters, while hentai pururin often contains more explicit and adult-oriented content.
I think it could suggest that love is so intense and obvious that it's being visually represented by something as strange as eyes pooping it out. It could also be a part of a unique and fantastical story or art style.