Of the hundreds of dramas I've seen (full disclosure - I'm addicted to Korean dramas of all types, action, historical, romance, political, comedy, etc.), this is a quality drama that is wonderfully constructed, it's one of the more sensitive dramas I've seen, it activates a wide spectrum of emotional feelings, there is a saying who says "There is no love in the world like a mother's love" and this, in my opinion, is the essence of the drama along with the question of what parenting/friendship/forgiveness is, a cast of talented actors
...a drama that is definitely worth watching ..warning..you need to equip yourself with a tissue..