This Is Us season 4 premiered on NBC last week, and there are a lot of things to anticipate this season, particularly with Kevin. He has to make a selfless decision, but it comes with a big risk in the long run. This risk could also lead to a huge setback in his life.

Considering what's happening with Nicky right now, Kevin decided to take off just to be there for him after the arrest. What he did was wonderful and noble, but there the downside is that he wasn't thinking about how this could affect him in the future.

In the process of wanting to become a hero and to overcompensate for the things he had done in the past, there's an enormous cost, which is the danger of relapsing. In an interview via Entertainment Weekly, executive producer Dan Fogelman talked about Kevin's decision and the risk that comes with it.

Fogelman described Kevin's act as "admirable and reckless." With the events that happened in the previous season, Nick was the one who set Kevin off and fell off the wagon. In This Is Us season 4, the executive producer said Kevin is heading back into the eye of the storm, and it could trigger a lot of things.

If ever Kevin relapses in, it could possibly be hard for him to recover. He did something that could make him regret, and with that, he'll likely need more time to recover. Addiction is just there around the corner, especially with Cassidy's involvement in the story.

There are still a lot of unanswered questions when it comes to Kevin and Cassidy. This Is Us season 4 introduced the latter character (played by Jennifer Morrison) and there are speculations she might be the mother of Kevin's son in the future.

In the flash-forward timeline, Kevin has a son but we still don't know who the mother of the child is. But after introducing Cassidy in This Is Us season 4, she immediately became the leading candidate -- especially since her experiences and demons were somewhat familiar with Kevin.

Cassidy and Kevin seemed to have issues with drinking and this could be a kindred-spirit quality to both of them. And with that, some speculated that Cassidy could end up being the mother of Kevin's son. But the question is: will things get simple for them?

Right now, everything seems to be unclear but Cassidy and Kevin could have a relationship in the future. However, there's no guarantee if that relationship will be a romantic one or not. There's also a possibility that Cassidy is just an instrument for Kevin to meeting his next love -- perhaps, Cassidy's friend.