Sword Art Online Fanfiction: Xiaoxiang Moonlit Waters

[I've run out of ideas, so I'm putting this on hiatus for now. I'm very sorry.] Xiaoxiang Shuiyue, or "Xiaoxiang Water and Moon," is taken from the name of the guqin piece "Xiaoxiang Shuiyun," or "Xiaoxiang Water and Clouds." The clouds have been changed into a moon and incorporated into the names of a family of four. [That's right, a family of four! Xiaoxiang Shuiyun.] "Wherever you dream of going, I'll bring something back from there for you." That was a promise she made when she was young. "There's no need. I've already traveled the whole world in my dreams," said the young man, who was much older than her. "Poor old master. He probably still doesn't know that Uncle-Master went back and got married, does he?" "Yeah. Seeing him wait for Uncle-Master to come play the qin for him all this time makes me feel... sigh..." The two children were talking, unaware that someone who shouldn't have been there had appeared behind them. So she'd married someone else. No wonder that ever since they said goodbye, it had always been her direct disciple who came to play the qin for him. "Knowing how this would bind the heart, why did we ever meet?" he murmured, then fell into a nightmare. That day, she finally returned to Changge Sect. He came to his senses, went to her, and handed her a scroll painting. She unrolled it and saw a woman dressed in green. She was tall, but her face looked a little young. She looked just like... her?! Theme: Childhood sweethearts saving each other