I can imagine that it's pretty fuckin complicated to just jump into a relationship in their positions
that's why I'm fine with waiting as long as there's proper character development
maybe MC is still hesitant about his ability to "replace" her husband, and he has his irl obligations to worry about
and she's struggling with these feelings of affection for MC and grief for her dead husband at the same time
I can imagine MC being content with the status quo where they and the little kids make fun memories, but there may be a point where yuzuki is ready to move on
sigh
I just wish them both the happiness they deserve, they're both good people