Since we have so little information about this 'call girl mc story', we can only assume. The call girl would be a central character, and there might be clients she interacts with who could also be important characters. There could also be other people in her life like friends or family members, if the story delves into her personal life outside of work.
As we don't know the details of the 'call girl mc story', it's impossible to say for sure who the main characters are. But most likely, the call girl herself would be a main character.
Given the lack of information about the 'call girl mc story', the main character is probably the call girl. However, depending on the nature of the story, there could be other significant characters. For example, if it's a story about her trying to escape the life of a call girl, there could be a mentor - like figure who helps her. Or if it's a story set in a competitive environment among call girls, there could be rival characters as well.
The best chapter pointer here is Chapter 33, "Variety Show of Villains". It opens with Following the announcement, five artists respectively reposted the Weibo—... and closes on Although Su Yinwan was considered half a goddess to him, the whole thing....
A practical answer is Chapter 38, because it turns the idea into a concrete scene. The chapter opens with Jiang Li had also observed the girl who had just entered., adds pressure through When did Jiang Li become so rational and composed?!, and ends on He Yun coldly turned his head and continued to.
Chapter 29 is the strongest chapter-level answer because it starts from Big brother, it's me..." The shadow suddenly spoke and it was Jiang... and follows through on Big brother, are you unwilling?" His mournful expression seemed to signal....
If you want the clearest chapter reference, go to Chapter 5. Early on, Actually, when Manager Fang saw Jiang Li, he was somewhat surprised.; later, the chapter leans on Because she was really too beautiful, and very young, completely different....
A practical answer is Chapter 56, because it turns the idea into a concrete scene. The chapter opens with Lei Shen originally had no idea about the trending topics on Weibo., adds pressure through So, bring it on, Blackie, starting today, I am Jiang Li's diehard fan!, and ends on At this moment.
A practical answer is Chapter 34, because it turns the idea into a concrete scene. The chapter opens with Seeing that the public sentiment wasn't quite right, Su Yinwan felt..., adds pressure through Hurry up and start the live show, I can't wait to watch the universe's..., and ends on Now that.
Chapter 32 is the strongest chapter-level answer because it starts from You should know, an ID photo is like a mirror for demons. and follows through on With airflow comes water flow, and your fortune will naturally improve."....
If you want the clearest chapter reference, go to Chapter 46. Early on, Upon hearing this, everyone but Jiang Li perked up with high alert.; later, the chapter leans on After all, there were only a few who didn't care how others saw them..
The best chapter pointer here is Chapter 40, "The National Museum Speaks!". It opens with [Jiang Li claims she copied this herself? and closes on The handsome guys on this show are so difficult to deal with..
The best chapter pointer here is Chapter 46, "Why Am I Second to Last?!". It opens with Upon hearing this, everyone but Jiang Li perked up with high alert. and closes on Did you calculate the score incorrectly?!" And 13 points?!.