This is the fan fiction I am working on. It is not following any known storyline, but with my own stories. This is it so far:
Rachel finds interest in a performing arts school located in Kyoto, Japan and may consider it, practically breaking Finn's heart in two.
Santana destroys Quinn's confidence after saying she still looks fat from when she was pregnant and says she should 'try one of those things called exercise.' Quinn tries dancing and thinks she's looking fitter and more attractive. After two weeks of dance 7 hours a day, Santana still mocks her by saying she is still looking fat, so starts throwing up secretly to try getting more attractive (hoping more than Santana); but when this story gets out at school, Quinn is at the bottom of the popularity ladder and no guy wants to be with her.
After seeing the pain inside she's causing to Quinn, Santana sees her life and wants to change and acts nicer.
Pics (may appear in the story):

Is Rachel going to Kyoto?

Is throwing up good, Quinn? No!

Is Santana going... Nice???