It was probably with Haon's 'death' that the father at last realised what he should've and shouldn't have done for him. With everything over at last, the father just looks like any tired old man, probably hoping to spend more time with his son but knows he doesn't have the right to ask for it.
In that most vulnerable and resigned state, being the one to look at Haon's back as he leaves instead of the other way around like usual just hits so hard. Now, he is truly alone.
It was probably with Haon's 'death' that the father at last realised what he should've and shouldn't have done for him. With everything over at last, the father just looks like any tired old man, probably hoping to spend more time with his son but knows he doesn't have the right to ask for it.
In that most vulnerable and resigned state, being the one to look at Haon's back as he leaves instead of the other way around like usual just hits so hard. Now, he is truly alone.