Harry would likely develop a different sense of loyalty. Since he's Draco's familiar, he might start to understand Draco's motives and actions better. He could become more patient and less quick to judge. Draco would probably develop a sense of protectiveness towards Harry that he didn't have before. He may also become more empathetic as he realizes the impact his actions have on Harry.
For Harry, being Draco's familiar might make him more submissive in some ways, but also stronger in others. He may learn to use his new position to influence Draco for the better. Draco, on the other hand, could grow from being a rather self - centered person to someone who truly cares about another's well - being. He may start to see Harry not just as an enemy but as a valuable part of his life. As the story progresses, they both could become more reliant on each other and their relationship could shift from one of hostility to one of mutual respect and even friendship.
A practical answer is Chapter 4, because it turns the idea into a concrete scene. The chapter opens with Qiao regretted her words as soon as they left her mouth., adds pressure through It's difficult for us when you ask for a guest's room number and key right..., and ends on A little girl acting.
Chapter 566, "New Game Begins!", is the clearest early answer because it turns Ai Xiaochun's situation into a concrete plot event. The chapter gives readers a real answer by opening on How is that possible?" Luo Xuan frowned, "What's the rush?
Chapter 406, "Barely Considered Living", is the clearest early answer because it turns Yu Li's situation into a concrete plot event. Early on, With the help of government officials, Jiang Li and Jiang Yan quickly.... By the end, This quickly aroused the dissatisfaction of variety show fans..
Chapter 580, "Old Sir Gu: I command you to start a live stream!", is the clearest early answer because it turns Ji Yanbai's situation into a concrete plot event. Early on, After seeing those comments, Ai Xiaochun was overjoyed..
Chapter 786, "Working at Chen'an?!", is the clearest early answer because it turns Song Xue's situation into a concrete plot event. The chapter gives readers a real answer by opening on When Jiang Li left Taiqi's office building, it was already getting...
Chapter 516, "Choosing You as an Undercover Agent is Pretty Stupid", is the clearest early answer because it turns Shang Shuyue's situation into a concrete plot event.
Chapter 858, "If You Dare, Take It", is the clearest early answer because it turns Qixing Tower's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Changqing flicked his horsetail whisk, face wooden, and said,...
Chapter 634, "All Villains", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event. The chapter gives readers a real answer by opening on But, luckily a few days ago, Jiang Li managed to expand his team from...
Chapter 719, "Borrowing Their Luck", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Chang Rong: "Hmph, it has nothing to do with me anyway, since no one...
Chapter 890, "Why didn’t anyone inform me?!", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Zhao Lang made a great impression on Jiang Mingchuan.