"You are suffering the same problem the rest of the Uzumaki Clan suffered from; your chakra is so dense and powerful that attempting E and D-Rank Jutsu is incredibly difficult." Sarutobi explained, "I would suggest you use the same amount of chakra, but try to make as many clones as possible with that chakra."
"OK! Bunshin no Jutsu!" Naruko called out again, this time filling the room with smoke. Once Sarutobi opened a window and dispersed the chakra smoke with an E-Rank Fūton jutsu, Fūton: Soyokaze (Wind-Style: Gentle Breeze), the entire room was covered in Naruko clones.
'Just like Kushina.' Sarutobi thought with a smile as Naruko started dancing in celebration of vanquishing her nemesis. Sarutobi then dispelled the illusory clones with a small chakra pulse.
"Naruko-chan, calm down please." Sarutobi called. Still grinning like a Cheshire cat, Naruko retook her seat.
"Now, that was an example of a little creative thinking in dealing with an obstacle." Sarutobi informed Naruko, "Regrettably, the next problem will be harder to fix."
Naruko's face fell slightly. "My Taijutsu." she whispered.
"Yes." Sarutobi told her bluntly. "I was watching the clearing last night when you took care of Mizuki. It was full of openings and incorrect stances. Who taught you your taijutsu?"
Naruko looked down and fiddled with the hem of her jacket. "Mizuki-teme." she replied quietly.
Sarutobi sighed. So, not only had Mizuki tricked and mentally tormented Naruko, he had tried ensure that she would be killed on her first C-Rank mission due to poor close combat skills.
Once again, Sarutobi made a note to have his two best interrogators educate Mizuki in why you do not piss off the Kami no Shinobi.
"Fortunately, I have decided that it is time for you to learn about your mother, Naruko-chan." Sarutobi told her, then braced for loud noises.
He wasn't disappointed there, as Naruko leapt to her feet and shrieked, "WHAT!" at the top of her voice. Given that her normal volume was just under a shout; her top volume was almost loud enough to be considered a high D-Rank Jutsu.
Wincing at the abuse his poor eardrums had just endured, Sarutobi attempted to calm Naruko down so he could explain everything to her.
Ten minutes later, Sarutobi finally managed to get her calm and sitting in her seat again.
"Now, this is your mothers file." Sarutobi gave the thin document into Naruko's trembling hands. She looked at it for a moment before taking a deep breath and opened it. She immediately noticed a very important fact about the file.
"This is a Shinobi Registration File!" Naruko exclaimed. She looked at the rank section. "Jonin? My mother was a Jonin?"
"Indeed." Sarutobi said. "Kushina was one of the few S-Rank Kunoichi this village has ever produced. She could give the Yondaime himself a hard time in a spar when he didn't use his Hiraishin no Jutsu (Flying Thunder God Jutsu)."
"Kushina." Naruko said, testing the unfamiliar name warily, "Uzumaki Kushina…my mother." A smile grew on her face as she looked at the picture in the file. A smiling woman with blood-red hair and deep blue eyes looked back at her.
A small section caught Naruko's eye.
Clan Status: Yes.
Village of Origin: Uzushiogakure.
"I'm from a Clan?" Naruko asked, "Wait, Ji-chan, you mentioned that I had the same problems as the Uzumaki Clan had…"
"The Uzumaki were allies of Konoha for over fifty years." Sarutobi said, "They founded their own village on the Isle of Uzu not long after Konoha was founded and both villages prospered. The Shodaime Hokage, Senju Hashirama, even married an Uzumaki called Mito, who is your Great-Great Aunt I believe. All members of the Uzumaki Clan had immense stores of unusually dense chakra and had a lot of trouble with chakra control exercises as a result."
Naruko smiled at her similarity to her Clan, and then frowned. "You said 'had'. What happened?"
Sarutobi sighed. This was not going to be pretty.
"At the start of the Third Great Shinobi War, Kirigakure, Iwagakure and Kumogakure launched a surprise attack on Uzushiogakure. Only those who were not within Uzushiogakure during the attack survived. I'm sorry Naruko-chan." Sarutobi said softly.
Naruko's eyes dimmed. "My Clan…is gone? Wiped out?" She asked bleakly.
"I'm sorry to say so." Sarutobi confirmed. "However, the three attacking villages suffered horrendous casualties at the hands of the Uzumaki. Almost the entire village was related to the Uzumaki in some manner, so there were a lot of them. For every Uzumaki that fell, at least a dozen invaders fell at the same time. When the last sword was sheathed, a full three-quarters of the invading shinobi lay dead and dying among the ruins of Uzushiogakure. These casualties happened because Kiri, Iwa and Kumo gravely underestimated their foe and, in turn, these casualties, combined with the Yondaime Hokage's Hiraishin no Jutsu allowed Konoha to emerge victorious."