Ahaha I'm listening to Spring Day rn :) Personally I saw Busan and I thought of a K-drama called Who Are You: School 2015. One of the twins lived in Busan I think.
This was one of the first stories that got me into manga and honestly I don't regret. It's my second time reading it, and it's still beyond words HANDS DOWN
IM SIPPING THIS TEA
IM CHUGGING IT