Koshikawa is a beautiful, talented, and currently single girl. She has had many relationships, but one of the relationships that still deeply imprinted in her memory is the one from college with a classmate boyfriend. Despite breaking up a long time ago, she always thinks of him, reminiscing about the beautiful memories between them. On one outing, it seemed fate arranged for them to meet again, and coincidentally, he was also single. The old flame reignited, and they decided to meet at a nearby hotel to relive the beautiful memories, especially the passionate moments they shared in the past.