Current Naruto in SM vs Current Sasuke with MS.

[SasukeNamikaze]

It spawned on whatever Sasuke is looking at.

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Ay Shunshined out of the way and where was Sasuke looking? At the spot Ay was before he used the jutsu.
His line of site did not change.

It formed on Ay, Then when A Shunshin'd it hit the Samurai. Therefore IT Traveled

 

[Optimistic]

It formed on Ay, Then when A Shunshin'd it hit the Samurai. Therefore IT Traveled

Cee even said himself that it ignites whatever Sasuke is looking at.Even if it does 'travels' it still hits Naruto regardless of the distance as long as Sasuke can see him he's dead simple as.

You will always deny everything i say so there's no point in trying to convince you anymore.

 

[Strict]

It formed on Ay

^This. It formed on A because A was the target to be hit by the flames. When A dodged, the already created flame started to travel to the target Sasuke's eye was focusing on after within the field of vision the first target stood.

Itachi's Amaterasu when missing Sasuke, traveled to the forest.