I mean he does have screen time but yeah they mainly focus on the FL and their relationship doesn’t get much…
Starting with ep. 14, which begins the 2nd story arc, Duke Su appears more frequently. It’s my favorite arc. They spend a lot of time together. After that, you get to see more him than you did at the beginning because their lives are so intertwined.
https://x.com/dramapotatoe/status/1805078644324483495?s=46&t=n_VBKEtO7vBf4EJmqK_fyg