I had no idea how cold Busan can be at night. So at the time I went there, I didn’t bring my jacket, because I thought “It’s summer and it’s beach anyway, why should bring jacket?” I was wrong.
During the day, the weather is lovely, but after 3 PM, it’s windy and getting colder at night. And this young man in the train knows what to wear. Simple sweater in green colour and keep everything basic.