Nice, a thread. 

I'm just gonna move that outline here:

- The immortal maybe has a mini prologue showing they've been running away. (A little back story or something)
- The hunter is given the task and info of the immortal runaway. 
- So the hunter hunts haha and chases after the immortal. (The first chase) Maybe even has the immortal cornered at one point.
- Some form of accident that was supposed to lead to the death of the hunter and then gives them the mark. (which leads to the hunter being like "welp guess I gotta end it now")
-The two join forces (after a lot of convincing from the immortal) (I imagine some very emotional/inspirational speech lol)
-On the run, they confide in a friend (either of the two's friend idk) as like a hideout for a short while. (I imagine this would put the friend in danger)

As a reference to look back on.