Primal Spark (Part 2)

Tista was glad they had to keep their eyes closed or Lith would have seen the grin on her face.

'It's nice hearing him getting scolded, for once. It means my lil bro is human.' She thought.

As Lith's and Tista's Primordial Flames struck respectively a rock and a patch of ground at her feet, their eyebrows went up in surprise.

"What the fuck?" Tista could feel through her Flames how different materials burned at a different pace.

At first, Lith and Tista thought it was just an impression. After a while, they could sort out the different components of their respective targets simply by the degree of resistance they offered to the Flames.

'He said purify but without specifying what, so…' After vaporizing the first rock Lith moved on to a second.

He had the Primordial Flames wash over the stone's surface and seep through it before making real damage, just enough to grasp the density of the rock's main components.