On the quiet edges of a seaside town, Lee Sangwon lives in silence and solitude. With a fragile heart burdened by a chronic illness, Sangwon spends his remaining days walking the shoreline alone-finding solace in the rhythmic whisper of waves and the golden hues of sunset. He's a boy of few words, shrouded in mystery, carrying his pain with quiet grace. Enter Lee Leo, the embodiment of life and light-an energetic soul who thrives in the embrace of nature. Whether he's jet skiing across the waves, diving into the blue, or casting a line under the sun, Leo lives every moment to the fullest. But no matter how vibrant the day, his gaze always drifts to the distant figure by the shore: Sangwon. Drawn by curiosity and an inexplicable pull, Leo approaches Sangwon with a simple smile. What begins as quiet companionship slowly deepens into something neither of them expected-a bond formed not just from shared days under the sun, but from the moments of stillness between the tides. As Leo unravels Sangwon's story, he learns that love can bloom even in the face of impermanence. Together, they discover that while time may be fleeting, the connection between two hearts-one quiet, one full of life-can leave a lasting imprint, like footprints in the sand that the waves never quite erase. A story of healing, wonder, and a love as deep as the ocean.

In a quiet corner of the world, a poor boy named Lee Sangwon lives in silence and wonder-his days spent observing life from afar, studying the rhythms of people who pass by, the joys they carry, and the warmth he's never known. A boy whose life lingers in soft melancholy, Sangwon never quite steps into the sunlight, only watches it fall on others. Each afternoon, he sits in the same hidden spot, eyes drawn to a soccer field where boys his age run, laugh, and live with a freedom he cannot touch. He watches, always watching, never daring to ask what it feels like to be one of them. Until one day, when most have already gone home, only one boy remains-Lee Leo, practicing with determined steps under the fading sun. He notices Sangwon watching, just as he always has. But this time, Leo walks toward him. "Do you want to play?" With that simple question, Sangwon's world begins to shift. What follows is a tender journey of discovery, as Leo brings Sangwon into the brightness of his world. From quiet corners to busy streets, from new hobbies to small acts of courage, Leo teaches him what it means to live-not just exist. Through shared laughter, gentle encouragement, and long talks beneath starlit skies, the two boys slowly grow inseparable. And in the space between passing glances and lingering touches, something even deeper begins to blossom-love.