He's no longer surprised people here think throwing sharp objects at children is anywhere in the general vicinity of okay. But, still: not okay.

He doesn't say this, just dodges grouchily, and starts internally considering if he could move quickly enough to grab or deflect a weapon mid-flight using chakra...

Probably shouldn't try grabbing a shuriken. They have a lot of sharp pointy bits. A kunai does have that nice convenient handle. Deflecting either is a more reasonable proposition, though he might not be able to control where exactly they go.

For Chihiro, meanwhile, this is just Tuesday.

He doesn't try it, though he probably would've if he was actually twelve because he was pretty stupid at twelve.

His plan is to start with something soft and not pointy after training.

Around mid-afternoon Kakashi pronounces them done for the day.

Sugira nods, doesn't really bother asking Chihiro if she wants to hang out (though he does quietly thank her for helping Naruto), and then he rounds up a protesting Naruto (who hasn't quite gotten the exercise down yet).

"I need to work on my techniques, anyways," he tells the blond, "And that's safer if someone else is around."

"Guess those're pretty cool. Alright. Bye Kakashi-sensei, bye Chihiro!"

"Farewell."

"Bye-bye!"

After they've left, Kakashi drops down beside Chihiro. "So, my cute little genin, anything you feel like sharing with your favorite jounin instructor?"

"No."

"Nothing about extra training? Other teachers? I used to be ANBU, we could swap stories."

"...I cannot say."

He really, really needs to talk to the Hokage about this.

"Can you at least tell me which one you're here to watch?"

"My mission is Uchiha Sasuke."

"And my mission is my students. All three of them. I won't let anybody hurt them." He pats the air just above her shoulder. "When you're ready to talk, I'll be here."

There is the briefest flicker of an expression on Chihiro's face.

"Do I have permission to leave?"

"Yes, yes. Practice is over. Shoo."

Sugira's eyebrows are singed and his hair is exceptionally poofy when he shows up the next day, and he periodically has to elbow Naruto to get the boy to stop snickering at him.

"Have fun last night, did we?" Kakashi asks when he (eventually) shows up.

Sugira's had Naruto practicing the tree climbing technique more. The blond nearly has it, so, he'll count that as a success.

When Kakashi shows up, he inclines his head, and says, "Testing a new technique."

"Well, I hope it's a useful one, because today, we have a mission!"

"Oooh! What kind? Are we gonna save a princess? Or fight an evil warlord?"

"No. It's a babysitting job."

"Alright." Unlikely to be very different from watching his younger siblings, or Naruto, or cousins, or niblings, or own kids. "Number? Ages? How long? And anything else?" He has a bunch of examples of 'things you should know about children before watching them' but it's hard to articulate easily.