3RD PERSON POV
Kokushibo: You........wish to fight two upper moons at once?
Y/N: Why not upper moon one and three?
Akaza:.......*scoff* You aren't even human anymore. Why do you fight for them?
Y/N: Why not? I have a family to care for.
He held his massive blade to them, the two reeling back as they stare at each other.
Kokushibo: 'Moon breathing first form.'
*BOOM*
Later
Giyuu: Two upper moons seem fighting someone?
Shinobu: Most definitely. I-
*BOOM*
Y/N cleaves straight through Akaza's arms as he unsuccessfully tries to stop the bleeding.
Akaza: Wha- WHAT KIND OF SWORD IS THAT?! I CAN'T REGENERATE!
Y/N: You can't?
He was confused as he looked at his blade though immediately sensed the mystic and bloodlust energy emitting from it.
Create your own fighting style
A breathing style
Anything can work really.