A chance reunion with a childhood friend upon returning home. The pure feelings once held in youth now awaken in hearts matured by time. A passionate, uncontrollable relationship between middle-aged adults. A man finally confesses the emotions he's long kept hidden, and a woman who accepts them. A deep bond forms between them, entwined with regret and longing. Their bodies tremble with a mix of shyness and excitement at this long-awaited touch. Seeking solace in memories, they begin a relationship sworn to be a one-time affair—yet its intensity proves too profound to end after just once, tightly binding their souls together.