Il Mare 2000 - 시월애 - 觸不到的戀人 - korean movie

A woman and a man discover they can communicate across time through a mysterious mailbox at a house called \"Ilmarae.\" Despite the two-year gap between them, they form a deep emotional bond through letters, sharing their loneliness and personal struggles. Their connection transcends time, leading to a poignant attempt to meet and a desire to protect one another from past and future heartbreaks.