Of course, the following is the polished copywriting version.On the basis of retaining the original intention, I enhanced the emotional depth and character portrayal, making the story more attractive and resonant: --- Rio Sanada is the founder and president of "Sanada Wellness" and a highly anticipated new female entrepreneur.She is only in her early thirties and has been selected as one of the "thirty-year-olds who will change the world in the future".However, behind her glamorous career, a past that was covered with 15 years quietly emerged. The gears of fate turn again, and Rio reunites with his former childhood sweetheart Daiki Miyazaki as a key witness in a murder case.Daiki, who is now a criminal policeman, stood in front of Rio again with unfinished emotions and responsibilities.And between them, it is no longer as simple as old memories. Time goes back to Gifu Prefecture in 2006.Rio was still a senior high school student at that time, with the dream of being admitted to the University of Tokyo.In the family where her mother died early and her father was busy all day long, she silently assumed the responsibility of taking care of her younger brother and supported half of the home with tenderness and tenacity. And that summer, just as Daiki was about to confess her feelings to her, an accident that happened in the dormitory completely changed the trajectory of the two - and also made that unspoken relationship buried deep in his heart for many years. --- If you have more background information or want to highlight a certain style (such as suspense, romantic atmosphere, realism, etc.), I can further adjust the polishing direction.