That's a good point! Sasuke can be her loyal assistant instead. Quickly now, they're losing the patient!

He'll put his hands on Naruto's stomach and make a face as directed.

After about a minute she pronounces that there's nothing more they can do, and the only thing for it is to have Naruto sit up and see if his insides aren't.

Chihiro stands vigilant.

"I feel great!" he declares. "Thanks miss medic!"

Hurray! Now it is time for lunch. Chakra healing takes a lot out of you.

It does.

He'll take over preparing lunch, whether something set out for them ahead of time or not, assuming the nanny isn't home in time. (Naruto can't be trusted with ovens and he'd be shocked if Chihiro had non-shinobi skills.)

There's things for sandwiches, including enough for the three genin.

He'll wake Chisei for lunch, then, and get everyone fed. (He knows what's safe for a two year old, and is careful that Chisei doesn't get anything he'll choke on.)

The nanny gets home after that and thanks them for looking after the kids.

Kakashi is waiting for them down the street.

"Yo."

"Hey. Any sort of report you want?"

"Is everyone still alive?"

"There were no casualties."

"Good enough for a D-rank! Congratulations on your first successful mission."

"Can we get ramen to celebrate?"

"I don't see why not."

"We just ate."

"Spoilsport."

"We can get ramen for dinner. Kakashi, will we be training more today? Or doing another mission?"

"More training, I think. Naruto, I want you to keep working on tree climbing until you get it down. Chihiro and Sasuke, more practice on maintaining your grip while distracted."

They agree, and set to work. 

Over the next few weeks, this settles into a pattern. One day of training, a D-rank that takes a half a day or a day, more training. Sometimes Kakashi participates in the mission, sometimes not; mostly it depends on how boring it is. After they've all got treewalking down, he moves them on to waterwalking.

Sugira's smart, and more importantly patient. He helps Naruto a good bit, not always successfully navigating around the other boy's sore spots but usually managing to. He tries to include Chihiro in more things, but doesn't push her.

He spends a large chunk of his free time working on his arcana. He doesn't make any particular effort to hide it, though the symbols remain inscrutable and he just says he's 'working on techniques' if asked. He figures out a spell to store and retrieve his spellbook in and from what is probably this world's Ethereal Plane. (He tests it on an extra the first ten times.) He saves his money carefully, to buy the fine paper and the components for the inks for spell-scrolls, which are too much of a pain to make to use in training but will serve to expand his capacity in an actual fight. He only sometimes shows up with singed eyebrows or covered in magical glitter.

Chihiro accepts invitations to extracurricular activites but continues to act like a creepy robot.