Fox-Fire (狐·火, "Kitsune-bi") is an unique Yin-based technique created by Isamu which conjures several spectral, disembodied flames which dance about his person in irregular curves, these flames take on a ghastly grey coloration and appear almost translucent to the naked eye. According to Isamu himself, Fox-Fires are composed of 90% spiritual energy (Yin) and only a scant 10% physical energy (Yang); this leaves them very unstable and with an average lifespan of seven seconds if they don't locate a viable target. When they do locate a viable target they use what modicrum of physical energy they have as fuel for their movement, which starts out as quite quick, but soon decrease dramatically in velocity and due to how their source of energy is burned - they fade out after approximately three s