So Long, See You Tomorrow (2023)

In 1995 Daegu, Dong-jun falls in love with a free-spirited and charismatic brilliant friend, Kang-hyun at high school. But Dong-jun misses the ultimate chance to open his heart before having the one gone. Then on, Dong-jun lives what is left of his life; unhappy, unsatisfying and untruthful. What if Dong-jun made a different choice?