A follower asked:
Beyond that, the beauty of fanfiction is that you can make happen whatever you want to make happen! Now, the one mistake I would avoid is to make it too personal. If you insert a random character (say yourself) having a trashy romance with the hero you might not get a lot of applause, but hey, if it makes you happy, go for it! Remember that you write for yourself first.
If you are writing for an audience I would make happen all the things you were hoping for while reading the original story. For example I always wanted to see a serious romance between Shinji and Rei in Evangelion, and I’m sure the first person who wrote a decent fanfiction about that made history, but that’s not too original, is it?
I think going back in time or running away are good plots, but what’s the conflict? To write a nice compelling story you need a problem the character will need to overcome. Make it an emotional journey. I love Naruto, but sometimes I felt that it’s packed with action without having necessary a lot of space for character development or feeling. Then again it’s not a shojo manga but a shonen (see here for manga types) but I would love an action packed sexy romance! Destroy the stereotypes!
Have fun! I hope this was helpful ^_^