Well, without having read the actual book, we can assume that the narrator, who is likely the one referring to 'my father's house', is a main character. The father, as the central figure associated with the house, is surely a main character. There could be a love interest for the narrator, perhaps a neighbor or someone they meet while in the father's house. And there may be an antagonist, someone who creates conflict within the family or in relation to the father's house, like a jealous relative or a business partner if there are family business aspects involved.
The main themes in 'In My Father's House Novel' may include identity. The setting of the father's house can be a place where the character discovers who they are. It could be related to how they were raised in that house and how it has shaped their identity. Love might also be a theme. It could be the love within the family, the love the father has for the family members, or the love the protagonist has for the house as a symbol of home. And perhaps, there is a theme of change. As the story unfolds in the father's house, things may change, either the family structure, the house itself, or the character's perception of both.
Well, it could be about self - discovery too. Maybe the main character returns to the father's house and through the experiences there, discovers things about themselves, like their roots, their past, and how it shapes who they are. It's often the case in such novels that the setting of the house serves as a catalyst for self - exploration.
I'm not sure specifically as I haven't read the novel. But likely, the father would be one of the main characters. And perhaps the narrator, who could be the son or daughter, is also a main character as the story is likely to be told from their perspective, showing their relationship with the father and their experiences in the house.
There was a novel called " My Father Is Invincible ", which was an urban novel written by Daka of the East. This novel described the plot of the protagonist, Qin Chuan, who became a useless father and became powerful through his son's trouble. The story unfolded in a relaxed and humorous style, filled with fatherly love and passionate elements.
There were a few novels that he could recommend, including " President, Your Father Is My Father " and " President's Daddy Can't Be Offended ". The plot of these novels involved the situation where the CEO was the father of the protagonist. These novels might be recommended by the President Is My Father that you're looking for.