I guess they showed it to explain how it's all started
i think it’s meant to be the effect of a flashback epilogue
to analyze it, it’s probably just to emphasize the emptiness minwoo feels without emotion. seeing younghyun’s happy face while failing to genuinely smile himself made him wonder why their smiling faces didn’t look the same so he started to take notes on younghyun’s expressions. boo-ya
Thxx!! Thank you guys
Well what was that in the end of ch 16 the emotion one why did they show the past?? Did he just imagine that all or am I too dumb I didn't understand what was the last scene for!?? Someone please explain