User blog comment:Nxf11rocks/Original?/@comment-25156300-20140724234218/@comment-7340329-20140726035751

Yeah, I was planning on making a special chakra nature, much like a hiden, that allows the user to create and disperse silica - with limestone-like properties - and soda ash so that the user can use their chakra - which I'll be making another hiden - to superheat the ash and silica to create glass techniques. This can also make a weakness if someone uses wind to take the silica and ash away from the battlefield or if they use lightning and/or extremly hot fire techniques to pre-make glass. Water techniques may also trap the silica and ash which will make it impossible for the glass to be made from the person who has glass release.

I don't know yet xD