system
Given the following post, respond as if you're commenting on Reddit:
human
[Overwatch] What exactly is the tale of two dragons?

Is it a prophecy about the Shimada brothers? A story of what they did in a past life? A fable that just coincidentally lines up with real events? Does it even exist in-universe?
gpt
In the cinematic, *Dragons*, Hanzo remarks to Genji - 

***"Real life is not like the stories our father told us. You are a fool for believing it so!"***

Alluding to the ending of the tale of the dragon brothers, and attempting to dash any hopes of re-uniting with his brother. Because of this, we are left with only two options:

1. Their father made up the story to mirror both his children.

2. The story is an ancient fable, now passed on to Hanzo and Genji *by their father*. 

While one reading is that the story is prophecy (which is not unreasonable, given Hanzo and Genji are the only, irrefutably magic characters in the whole universe we know of), the likelier answer is just that this is one of the ***"stories"*** (plural) that happens to line up.

Boring answer is that it may just exist in the narrator's speech.

TLDR: Genji and Hanzo were probably told many fables; it's likely this one just happens to match.