Pride
Before Reigner's women fight began, he himself was already close to Ho Firme.
Clad in The Dreams Of Medusa set, Reigner was naturally equipped with his snake staff too that darted for this handsome face. He was fast, decisive, and ready to kill if necessary, which was still outstanding for many new earth people.
"Our scarlet flames are limitless!"
"Oh, really?"
It looked like Ho Firme liked to spit out bullshit while fighting. He commented on his every move, so it would be a bother to one's ears as even a common person could possibly die from this overload of cringes.
"GO FORTH - THE SCARLET BIRD OF DOMINANCE!"
"For fucks sake..."
If his sister spits brainless comments, then Ho Firme goes rampant with his cringes.
They were truly siblings in this case.
And Reigner wasn't someone who stood silent to most matters. If something annoyed him, then he would make sure to notify the other side nicely.