Anything with kids is just heart wrenching...
One of the things I love about this series, they aren't afraid to go where other shows wont. Case in point, several episodes where you see young children getting destroyed by the zombies, especially the one early on at the hospital, who had been hidden by her mother.
Yeah, it's tugging on heartstrings, which is a theme in many Korean media. But it seems something that shows like The Walking Dead don't really touch on much.....at least not very young kids.