Y/N walks along the beach, waves brushing her feet, carrying her straightened hair back from her face. She helps her friends make quail eggs in class, laughing and fumbling, trying to gather the courage to confess to Jaehee, while Jungwon watches quietly, secretly jealous and caring more than anyone knows. In the hall, Jaehee teases another girl about her hair, and Y/N straightens hers, wishing she could feel confident, while Jungwon notices every detail, wanting her to know she's perfect as she is.
In the secret room filled with her dad's comics and sketches, Y/N gives Jungwon the ocean journal to write in, and he fills it with photographs, drawings, and words about her-how much he notices her, how he loves her laugh, her hair, her focus, her little gestures-and Y/N cries reading it, overwhelmed by the love he has quietly held for her. On the school trip, Jungwon carries his camera, capturing every moment she doesn't notice, documenting their world together while the others race, laugh, and splash in the lake.
When his mother has an accident, Jungwon leaves abruptly for Seoul, and Y/N sends messages through the phone stand in the secret room, crying, "Jungwon, I miss you so much" and "Where are you, I miss you, come back, Jungwon," but he doesn't answer. The silence stretches for years, and Y/N grows up, moving on with her life, carrying the ocean journal and the quiet ache of longing.
Now, five years later, Y/N waits on the beach for a blind date her friends set up. The phone rings; silence, then laughter she knows instantly. She turns, and Jungwon is there, smiling, alive, real. He hugs her, laughing, and says, "Y/N, will you be my girlfriend?" She throws her arms around him, crying and laughing, saying yes. The waves roll at their feet, the sunlight glints off her hair, and everything from Garam High-the teasing, the secret moments, the quail eggs, the ocean journal, the silent love-leads them to this moment, finally together.