Questions & Mysteries Why does the sky split when 2 emperors clash?

[Balen]

 

[Xione]

Emphasis on their conquerors haki, as they are the biggest conquerors/emperors in the world other than world government.

 

[Jew D. Boy]

Big CoCs penetrate the sky, what else is there to say??

 

[Chrono]

Because Oda is uncreative.

 

[Seth]

Top tier Conqueror's Haki.

 

[XGoldrogeRX]

when 2 strongest forces meet. they don't just effect the surrounding again but even the skies that miles away from them and thousand times bigger than their battle arena can be split.

 

[Finalbeta]

Because it's the sub effect of the huge amount of haki and DC. Though we don't have any confirmation either for that.

 

[Warchief Sanji D Goat]

Because they're top tiers

 

[Finalbeta]

Because they're top tiers

I think that's not enough, it's the CoC's sideffect