These are some scattered memories, and they are also proof that I have been in this world. There is no protagonist in this book, some are just passers-by. The stories may be true or false, and things may be right or wrong. It's all in the past, and now it's become a prologue. The roads we've walked and the people we've met will never go back, and it'll be difficult to meet again.
Concept: Being together is fleeting, and everything has passed.