Because This Is My First Life|Sangju Eunmorae Beach — The Lesson on a Namhae Shore

Nam Se-hee comes south to help pickle kimchi in Yoon Ji-ho's hometown and ends up drunk on a neighbour's hospitality. The camera finds him on the water. She finds him there too. The line that pilgrimage blogs still quote is the one she uses to teach him how a kiss is supposed to work.

Korean Wikipedia lists Sangju Eunmorae Beach and the Idong-myeon shore among the official locations. The county tourism board still sells the beach on its own terms: two kilometres of fine pale sand, a pine belt behind it, Geumsan standing inland, Hallyeohaesang National Park on the water. Address on the county page is 17 Sangju-ro, Sangju-myeon. The sand is public. The pines are public. The water stays shallow a long way out.

You do not need the scene to justify the walk. The scene is why a particular stretch of this coast now has a second name in another language. Stand where the pine shade stops and the sand begins. The lesson was never about technique. It was about two people who had run out of contract language.