It's him

"I will show you my elemental ability," Kaan said and gathered a huge amount of spirit energy left arm.

Suddenly, a glowing vortex made out of pure air and spirit energy covered his right arm. 

The vortex was spinning at a speed impossible to discern. It looked like it was capable of disintegrating anything that went inside it. 

"Wind affinity is not exactly a great match against me," Aru warned. 

"Let me be the judge of that." 

Kaan dashed forward with it. 

The vortex was spinning like a drill over his right arm. He wanted to dig out Aru's heart with the elemental attack. 

Aru, however, calmly welcomed the wind elemental attack. Currently, his affinity with the element is one hundred per cent. So, his resistance to it was just as good.

Aru could see the vortex on the Kaan's hand. 

Instead of dodging it, Aru welcomed it with both hands. At the same time, an equal and opposite vortex of wind formed on his arms to nullify it.