When my parents died and the company was in crisis, I severed ties with my troubled brother. Five years later, he became famous and worth hundreds of millions. When interviewed, he only regretted his sister who left that year. Tens of millions of rewards were offered all over the Internet to find someone, but in the end only my long-dead diary was found, which contained the unknown hardships and deep feelings of the year. A story of regret and redemption unfolded.