Rui found himself on the defensive.
Kane had evaded his counter, disappearing at an astonishing speed while also simultaneously almost killing him.
Rui knew that he had swung with the intent to kill. If Rui hadn't leaped away, he would have died.
The realization melted away every ounce of restraint that Rui had. Kane had reached a level of power that was second only to Rui and Ieyasu before they broke through. Since he wasn't using his Martial Senior at the moment, he was effectively a Martial Squire at the moment barring his senses.
He had already told Kane to attack with the intent to kill. Kane could not afford to hold back. Kane had conditioned himself mentally to be prepared just for that. He was not going to hold back at this juncture.
Kane swung his daggers in strange manners as his speed continuously increased reaching levels that Rui didn't think was possible within the Squire Realm.
He grew faster and faster.