Utao’s mysterious brother, Kirio, is kind of a jerk, but he does have a point: Utao started the fight. For her part, Utao was understandably freaked out by the sudden appearance of another kid who looked just like her. What follows is the first sustained kakashi-on-kakashi battle, and at the start, Kirio seemed to have had more practical experience, because Kukuri is schooled by Takemikazuchi, as Utao panics and flails about rather haphazardly at first.
I was a little annoyed that we get no explanation for why Kirio would be so evil and cruel right off the bat, but not as annoyed that the battle was so public; in the view of dozens of people, even caught on camera, and resulting in casualties. I feel the consequences of this exposure are too underplayed. The seki aren’t Men In Black; they can’t just flashy-thing the town and remain in the shadows. This was a big screw-up. Still, the battle itself is very exciting and nicely animated. I’m sure we’ll see more of this.
Kirio presses his attack on Utao, even though he had clearly won the day. This is the sign of youthful exuberance, but not sense. He was sent to capture Aki, not play with Utao, and when he kicks Utao when she’s down, she digs deep and comes back in a big way, tearing Kirio’s kakashi to bits. Both seki must now return to the village for kakashi repairs. In Kirio’s case, that means returning to a physically abusive bearded bastard. Now we know what Kirio’s a cruel jerk: people have been cruel jerks to him.