This video appears to be a scene from a K-drama, possibly "High School Love On." It shows students in uniform on a school campus, with a dramatic moment involving a fall and a potential supernatural element (an angel). The dialogue suggests a romantic or dramatic storyline.
Transcript
But you're here in my heart so who can stop me if I'm sick. What if you say you I was to
Original caption
Reply to @lex_salish He finds out that she's not a human being but an angel who saved him from falling off the building #kdrama #highschoolloveon #kdramasfyppppp #kdramaedit #viral #angel #makeitviral #foryoupage #fyp