1
A lonely teen meets a mysterious neighbor who knows his birthday—then vanishes without a trace.
2
Years later, Suansoon prays for his injured love—then meets his high school–aged self once more.
3
Onsa and Suansoon grow closer through movies and late-night talks, blurring time and emotion.
4
As Suansoon moves to a new apartment, he meets another student next door—just like before.
5
Onsa plans a secret outing for Suansoon as their days together near a quiet, tender end.
6
Suansoon disappears after leaving Onsa a letter, sparking a desperate and tearful search.
7
At the theater, Onsa meets Suansoon for the “first” time—two souls crossing through time.
8
As graduation nears, Onsa and his friends share one last night at Nan’s café before goodbye.
9
In 2018, Onsa’s accident stirs memories from 2008—where fate links him to the name “Suansoon.”
10
Onsa reveals his name and leaves a letter for Suansoon as the school’s film night begins.
11
Suansoon chooses a new path—and a familiar voice answers when he calls about a vacant room.
12
Reunited at Nan’s café, Suansoon and Onsa finally find peace, love, and the friends they lost.