Go Back to the Past and Be with Yourself

Say important things three times: Narcissus! Narcissus! ! Narcissus! ! ! 13 Years ago, she suddenly came to her own world, but disappeared 5 years later. No matter how she searched, there was no trace. Until 8 years later, she returned to the city where she first met, met up with friends, and saw that figure in a coffee shop... (The writing is sloppy, maybe the timeline jumps a lot, so I will try to use paragraphs to distinguish it) Purpose: redemption