Theories and Rumors

It is all a dream theory:
Many fans theorize that the entire story is a dream from Steve. This is because he narrates throughout the story, so this could be him controlling his own lucid experience. They also think this because he is put through many death scenarios, and still survives.

Aredrenla is a demon:
Another theory is that Aredrenla starts off as a demon, then converts to an angel near the end of the story. This is because it has been confirmed that she did not save her village long ago, but she attacked and destroyed it. This fact could be debunked, because Herobrine could have had something to do with it, but even his magic wasn't strong enough to cause a young girl to go into a murdering rampage. This theory can also be supported by the black scar Aredrenla has over her left eye. This only means that she has black blood near her brain, which concludes the theory for most fans.

Herobrine died of heart attack:
Fans believe that instead of Steve having the dream experience, it was Herobrine. They believe that he died not from Steve killing him, but from a heart attack in his sleep.