What started out as a show about a seemingly ideal family that occasionally experienced struggles is slowly taking an unusual turn given the current trajectory of "This Is Us."

This week, NBC's biggest freshman show this year delved deeper into the rivalry between brothers Randall (Sterling K. Brown) and Kevin (Justin Hartley). The tension seemed to have reached fever pitch as children and seemingly quieted down as they grew older. After having a public scuffle in the middle of New York City, Kevin and Randall were able to put aside their differences with them ending the night in Randall's basement watching an episode of "The Manny" together.

Kate (Chrissy Metz), on the other hand, despite being at the opposite side of the country was revealed to have some kind of animosity towards her mom when it comes to her physical appearance. But with Metz revealing that her "This Is Us" contract entails her losing weight, it will make an interesting plot arc not just for Kate but also how she views other people in her life.

Given that she is quite obsessed with shedding pounds recently, her upcoming change will ultimately affect her relationships, especially with her mother.

"In our contract, it did state that that would be a part of it, to lose the weight in the trajectory of the character as she comes to find herself," Metz revealed to TV Line. "That was a win-win for me. Because it's one thing to try to do it on your own. But as human beings, it's an ego thing: We're more likely to do something for someone else."

Mandy Moore, on the other hand, ponders on how her character, Rebecca, handles three very different kids all at the same time in a separate conversation with Moviefone. At the start of the show, she obviously had a hard time accepting Randall, but once she got past her issues, it turned out that she lavished the kid with more attention and interest more than her own biological children

"I think there's been a tricky sort of amount of friction with them. And I think some things have already been revealed, like Randall and Rebecca are very, very close, and that's got to be hard to feel like there is a favorite child, and for the other two siblings to feel like they're kind of chopped liver, to a certain extent. It's messy, it's life, it's something we all can relate to," she explained.

Unfortunately, Moore's description of Rebecca and Randall's relationship may soon change as next week's installment is hinted to be quite a problematic one for the two. Despite not straightforwardly saying it, it seems like that the adoptive Pearson kid will finally learn that his mother knew who his biological father was all along and will be hurt that she hid it from him all his life.