Why Dylan the second mc in the story :
If we're talking about Amber, the main character, who is the second character? Of course, it's Sam, not Dylan, because Sam is Amber's son, not Dylan. If we go back to Amber Dylan in the game, we see that Amber cares for and looks after her son much more than Sophia does for Dylan (we know this from her conversation with Dylan about her relationship with her son, and how she dresses up in front of him to make him feel comfortable, which made him confident when he talks to Sophia. Even Sophia herself said: How proud you are of your son Amber because he knows how to attract women with his conversation).
Let's return to Sophia. Since Dylan is her son, it's only natural that he's the second main character in the game. He's her son and her responsibility, just like her daughter Ellie. She and her family find themselves in a large new city, unlike their small town. She takes care of Sam, Tyler, Zach, the three boys, and the two young men at the museum, but who will take care of her son? She's never cared for him before, and she previously advised him to look for a girlfriend elsewhere. He's a young man with no experience with girls because she hasn't taught him anything like she did with the others, especially the three boys, and like Amber did with Sam over the years. So, she has to take care of her son, or she'll lose him. As for the forbidden relationship, as a married woman, any relationship she has outside of marriage is forbidden. Those who object to her having a relationship with her son should remember that her relationship with her daughter Elbest was also forbidden. Did they object to that? Isn't her relationship with Sam and her acceptance of being his secret lover forbidden because she's a married woman, and could it destroy her marriage and her relationship with her son as a mother and son? Similarly, her relationships with Tyler, Zach and the three boys, the two young men at the museum, Aiden and Vicky's friend—all these relationships are forbidden to her because she's a married woman. The only person she can go out openly with, away from her husband, is her son; there's no one else, not Sam or anyone else. And this doesn't destroy her marriage because he's her son.