Snape is another character that could be deeply involved. Given his complex relationship with Harry in the original story, in this type of fanfiction, Snape could either be a force trying to stop Harry from going too far to the dark side, or he could be misinterpreted by Harry, which could contribute to Harry's decision to switch sides in the first place.
Obviously, Harry Potter himself is the central character as the story revolves around his switching sides. Hermione and Ron also play significant roles. When Harry starts to show signs of siding with the dark side, Hermione might try to use her intelligence to figure out what's wrong and bring him back. Ron, on the other hand, could be more impulsive in his reactions, either trying to fight Harry if he becomes a threat or trying to persuade him to return to the good side.
Voldemort is also a key character. If Harry is switching sides, Voldemort would be the one he's switching to, at least initially. Voldemort would likely try to manipulate Harry further, using his newfound ally to gain more power. Dumbledore, even if he's dead in the original series, can still have a major influence in the fanfiction. His past actions and words might be re - examined by Harry as he makes his decision to switch sides, and his spirit or memories could still guide Harry in some way.
Chapter 607, "Confrontation Head-On", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with Several boats hadn't yet crossed when they were directly capsized.
Chapter 812, "You’re Extorting Money!", is the clearest early answer because it turns Bu Fan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li actually called the police!
Chapter 732, "Sister Xiao Wan, I Don't Understand", is the clearest early answer because it turns Jiang Cheng's situation into a concrete plot event. The chapter gives readers a real answer by opening on Bai Lu, eavesdropping in the corner, marveled at Jiang Cheng's...
Chapter 942, "In Which Year Did the River Moon First Shine on People [Extra · River Moon Edition]", is the clearest early answer because it turns Shine's situation into a concrete plot event. The chapter gives readers a real answer by opening on She never expected Jiang Yan meant this.
Chapter 784, "Slander Brother Yang Without Any Proof?!", is the clearest early answer because it turns Brother Yang's situation into a concrete plot event.
Chapter 595, "Four-legged Black Toad", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Jiang Li steadied himself with support, endured for a while, and then....
Chapter 4 is the strongest chapter-level answer because it starts from Qiao regretted her words as soon as they left her mouth. and follows through on A little girl acting mysterious, learning fortune-telling, what is this....
Chapter 922, "The Good Deed You Did!", is the clearest early answer because it turns Rong Ya's situation into a concrete plot event. It opens with Jiang Li skipped through those comments and called Zhao Lang back.
Chapter 814, "Under the Eaves, One Must Bow", is the clearest early answer because it turns Xiao Yuan's situation into a concrete plot event. It opens with Two little glutinous rice dumplings were lying by the coffee table... and closes on I can't take it anymore, can't take it anymore!.
Chapter 830, "Pinky Promise for 100 Years", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. Early on, At eight o'clock in the evening, Jiang Li arrived home.. By the end, Immediately, two shadows darted out from the room inside, each....