Board Thread:Questions and Answers/@comment-30662466-20170406190824/@comment-5470513-20170406195957

Interactions with canon material (and/or events) are allowed, of course. But they have to be properly set in the timeline. Click=> to check out the timeline in SAO Wiki.

About Kirito losing against Heathcliff, that cannot happen here, since it'd alter one of the major dates, which is the clearing of SAO. Nevertheless, I must say that your idea about Kirito losing that fight is far more interesting than what actually happened.

If you wish to test out your creativity to the fullest, there is always the option of creating your own VRMMO here. There, rules for SAO do not apply, and you're basically your own admin creating your own rules for your game.

I wouldn't recommend it so early however, since you lack experience in story writing (or rather, I don't know if you have much experience). If you want guidelines click Here for a blog I wrote about guidelines for Aspiring Writers.