Water, earth, air, fire a sequence that determined the natural order of the Avatar world. A sequence that enslaved the majority but ignored reality.
for the most important element of them all was ones self. Energy that can be focoused into a single thought, movement, or blade. The Shinto clan was taught this by a spirit named Bishamonten centuries ago in the time of the lion turtles. But when the spirits were sealed away the clan in fear of the outside world sealed itself away stoping all outsiders from entering or leaving alive. But on the day the gray ash fell from the sky. Things changed.
warriors clad in red charged the beach leaving from their giant metal ships which on their sides depicted a flame.
Warriors clad in black yoroi and deer antler helmets stood armed with spears,swords and bows ready to meet them.
The blows between the two forces were fearce fire benders smoldered to crisp those who didn't properly infuse chi or used all their chi up leaving them defenseless into their skin. Firebenders died slash stabed or shot down by an arrow the battle lasted several hours with the samuri of the aka shika.