When we were 13 years old, we came to junior high school together and met him together. When we were 16 years old, we came to high school together and he was still the same. When we were 18 years old, we became strangers because of him. In our youth, we cried, laughed, and rebelled together. In the end, we all grew up, but we were all strangers. We would never be the good best friends and good buddies we were before. If you could go back in time, would you still make such a choice? I think I would. How would you know the result if you didn't try it?