Little children crying always breaks my heart. I cried so many times in the last two episodes.
That little girl is such a good actress. I keep seeing her as Byeo-ul from Love Scout but I also saw her in Hospital Playlist, Atypical Family and more recently in Friendly Rivalry. This girl and Oh Eun-seo (from Family By Choice, Love Next Door, etc) are two of the cutest little actresses in kdramas these days.
BTW the hospital scene at the end suggests Man-su's condition has improved. They appear to be wheeling him to OR for an emergency surgery.