As I don't know the story in detail, I can only guess that the Stone Boy himself is definitely a main character. There might also be a mentor figure, someone who helps the Stone Boy understand the significance of the stone he has.
Perhaps there is an antagonist in the 'Stone Boy serial story'. This could be someone who wants the stone for their own evil purposes. And there may be friends of the Stone Boy, characters who stand by him through his adventures and help him when he's in trouble. They could be other kids or magical creatures in the world of the story.
Well, in addition to the Stone Boy, there could be an elder in the story. This elder might be the keeper of the knowledge about the stone's origin. There could also be a sidekick for the Stone Boy, a character that provides some comic relief while also being helpful in the story's events. And there might be a shadowy figure that is always lurking in the background, adding an element of mystery and danger to the story.
If you want the clearest chapter reference, go to Chapter 41. Early on, The live streaming room suddenly boiled over again.; later, the chapter leans on [Did this matter really have such a big impact?.
Chapter 45 is the strongest chapter-level answer because it starts from Helplessly, Jiang Yan had no choice but to step on the accelerator. and follows through on The guests have to go through so many troubles on the way, while these....
Chapter 16 is the strongest chapter-level answer because it starts from Just as the words fell, Jiang Shixu swiftly cast his eyes downward. and follows through on Jiang Shixu panicked, set down the bowl, and reached forward to grab her....
Chapter 909, "Hexin Sanatorium", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. Early on, Jiang Li looked at him, as if recalling something.. By the end, Back in her room, she took out the incense bag Jiang Li gave her from....
Chapter 2 is the strongest chapter-level answer because it starts from On the top floor of the Financial Building, a gathering of dark clouds... and follows through on Jiang, Lin Manru, turned pale and quickly explained, "It's not eloping, my....
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.
Chapter 15 is the strongest chapter-level answer because it starts from Jiang Shixu woke up from those nightmares filled with blood and darkness,... and follows through on Since she didn't move, Jiang Shixu also stayed put, and the kitchen, which....
Chapter 802, "Gone Again!", is the clearest early answer because it turns Wanzhi's situation into a concrete plot event. The chapter gives readers a real answer by opening on Have you checked the fifth floor? and ending on The moment it happened, the old man instructed everyone not to tell....
If you want the clearest chapter reference, go to Chapter 25. Early on, Therefore, from his childhood, Jiang Shixu had felt an extreme aversion to...; later, the chapter leans on Over time, he naturally developed a gap of estrangement between himself....