Although at first Kana's wind seemed to be erratic and disordered, after a couple of minutes Aster saw she was using it to drag more spirit energy towards her body.
Aster nodded in recognition.
"Smart girl", he thought.
Each attribute had its pros and cons, for example his annihilation and destruction from Lilia and Alice, even the ice element which Aria used weren't suitable for what Kana was doing.
Sarina was of course surprised to see her daughter not only manipulating her attribute but even using it for such a thing, which even she managed to do before.
But it wasn't her fault, spirit energy floats invisible and untouchable in the atmosphere, only being attracted by the dantian when she cultivated, Kana was only able to do it thanks to Aster condensing and purifying the energy to the point that it was easy for anyone inside the furnace to absorb it.
Aster found rather cute the surprised expression in Sarina's face, he caressed her lower back before saying.