Fire Release: Thermite Afterburner

Mixing Senjutsu chakra and Fire Release chakra within the stomach, Shiro exhales, forming a fast moving torrent of greyish, nearly transparent, glowing ash. Upon it coming into contact with the target, it ignites, generating immense heat. The temperature of this technique is so high that it can liquify and melt the armor of Susanoo.

Even if the ash it doused in water,, upon igniting it, it becomes impossible to put it out due to the heat created.