Ditto
동감 (original)
In this endearing supernatural love story spanning two decades, a university student finds himself communicating with a female classmate from the same school through an antique ham radio...
Starring Kim Ha-neul, Yoo Ji-tae, Ha Ji-won, Park Yong-woo, Shin Cheol-jin, Yoo Tae-gyun, Lee In-ok, Lee Yeong-gwang, Lee Seung-chan, Kim Sang-won
Watch "Ditto" from streaming services Pluto TV, Imdb TV, Amazon released in 2000. It's a fantasy and drama movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.