Meeting The Earl Sisters Again

"Just as I thought, violet grade," Grey muttered when he saw the violet color on the region of the lightning element on the stone. 

Grey currently had four different elemental grades for his seven elements, with the fire element supposedly being the highest with the cyan grade, lightning element follows being in the violet grade, the wind and water elements were blue grade, while earth, darkness, and space elements were all in the purple grade. 

"Uh! What's this?" 

A fascinated expression appeared on Grey's face when he looked at the water element, its grade for some reason had changed from purple to blue. 

'How? I haven't even tried improving it in any way, nor have I absorbed any treasure that has to do with the water element.'

Grey found this discovery surprising. His elements had never increased without his knowledge, so he found this quite strange.