i like the last one and also theres this one song that gets stuck in my head and i can go two years without hearing but still know it. lol. torture
episode 4 : when "hot" ice melts. the one where hilda died. i found it to be a very cool insight to the characters and how they portrayed them.
my runner up would be the hot springs episode. i have to say though thats coming from a guy's view so that makes me a little biased. ....overall i stick to episode 4
my favorite episode is ep.15 The Seven Emerge. i liked the fight with Leilong.