something about hotcoolz chemistry, the way they communicate, i just love it so much. from the very beginning, i see how yunjin is so open to talk about how she feels how she is so good at expressing her feelings to sakura, and how sakura being a good listener and slowly learning from yunjin ㅡto express her feelings more. 
like in this short video, i can see their different way of thinking, and how adorable yunjin's mind is (i am sure sakura feels the same lol). i love it when yunjin started yapping about her imagination of her own world, and sakura just listening to her and even makes her own way to experience what's on yunjin's head^^ it's really admirable honestly. even yunjin was a lil bit shocked there because sakura was like yeah maybe you are right maybe there is something like that in this real world instead of invalidating her imagination (well sometimes she teases yunjin too but not this time haha)
i really admire them so much, it makes my heart warm to witness this lol