I'm not entirely sure without having read it thoroughly, but there's likely to be the character associated with the black phone. Maybe it's a victim or someone who has a special connection to the strange events related to the phone.
In 'The Black Phone and Other Stories', we might expect to find a range of characters. There could be a group of children, as often in horror stories involving the unknown, children are the ones who first encounter the strange phenomena. One of them could be the main character who has to deal with the enigma of the black phone. There could also be adults, like parents or authority figures, who either don't believe the children at first or are also affected by the events in different ways. Their reactions and interactions would add depth to the story and help to build the overall atmosphere of horror and mystery.
A practical answer is Chapter 74, because it turns the idea into a concrete scene. The chapter opens with Having seen Jiang Li's ID before, he knew that this person named Shiguang..., adds pressure through It's not just a banner we are talking about;
If you want the clearest chapter reference, go to Chapter 129. Early on, When they saw that the live chat was full of praise for Jiang Li, those...; later, the chapter leans on Had they been used as pawns by publicity accounts?!.
Chapter 135 is the strongest chapter-level answer because it starts from The sun blazed down mercilessly, but thankfully, the path to the mountain... and follows through on Are you healed from your injuries?" Zhao Lang smiled and nodded, "Thank....
Look to Chapter 122 for the clearest answer. It begins with Damn, are we supposed to find the points card in the mud?!" He had just..., keeps building through To salvage his image, he had deliberately dressed up before leaving the..., and lands on He had just steadied himself when Qi Tianyu.
Look to Chapter 100 for the clearest answer. It begins with The barrage was about to die of laughter., keeps building through [Hahahaha, help, why is the young master always being chased!] [Next door,..., and lands on Her eyes flickered slightly as she grabbed the hand..
Look to Chapter 103 for the clearest answer. It begins with Jiang Yan looked at Zhao Lang with suspicion, eyeing the dark substance in..., keeps building through It's not going to make my face fester, is it?" Zhao Lang smiled, "Do I..., and lands on Jiang Yan felt deep guilt welling up inside.
If you want the clearest chapter reference, go to Chapter 124. Early on, Since there were too many points cards inside Jiang Li's barrel, Director...; later, the chapter leans on However, Jiang Li merely lifted her eyelids and said indifferently, "No....
A practical answer is Chapter 157, because it turns the idea into a concrete scene. The chapter opens with It was already the last day of Flash Change in his dream., adds pressure through So he was being coerced into compliance?, and ends on I'm laughing myself crazy, do actors all have such.
If you want the clearest chapter reference, go to Chapter 132. Early on, The new girl in the live-streaming room went crazy.; later, the chapter leans on Who is this handsome guy???" "Ahhh, so handsome, I'm gone, where is the....
A practical answer is Chapter 76, because it turns the idea into a concrete scene. The chapter opens with Thinking of this, the aunt repeatedly praised, "Girl, hearing your words..., adds pressure through Leaving aside whether what she's made is good or not, just taking these..., and ends on Soon.