Well, this is my first time writing an article. If you like to leave your paw prints, if you prefer hooking up, welcome to bookmark the column, okay! ! ! What would you do if you were given a time machine? What would you like to change? Can you make those past regrets perfect and let the scars bloom again? Perhaps a person has to go a long way and experience countless sudden prosperity and desolation in life before he becomes mature. Haiko never thought that her life could be lived like this, so exciting, and so touching. Theme: After experiencing all kinds of situations in the world, the story is about how Saiko understands the value of life and finally becomes optimistic and positive.