Every night, Yeo-un takes the last train home—same route, same time, same routine. But one thing keeps catching his eye: a girl with a guitar and a presence that lingers in his mind. When a shared love for the indie band Long Afternoon sparks a conversation, their late-night encounters begin to turn into something more. But Hae-in isn't just another fan—she's the voice behind the band, a secret she can't afford to reveal. As music draws them closer, the truth may threaten to pull them apart. Whe