Naruto's Twin sister Hina

"It seems I have let my guard down. Genjutsu is totally unexpected." 

He turned around to see Hina with a red eye. The moment Hina activated her Sharingan, she got a unique vibe around her.

"What a powerful eye. If I am not careful it will be troublesome"

With that, he initiated his attack on Hina. Because of Hina's Sharingan, the battle seems to have gone to a new level. Both the mysterious figure and Hina started their round 2 fight. 

Hina's attack and defense become very precise. She combined her body flicker technique with the Sharingan to make her attacks more powerful. 

[ Hina's body flicker technique is still on the amateur level. Nowhere near Shisui Uchiha. These kinds of techniques can only be strengthened through life or death battles]

" Powerful eye and Powerful technique. It seems you are built differently compared to that two little boys."

Even after Hina activated the Sharingan and Body flicker technique, the mysterious figure can keep up in the fight. His attacks have also got strong. 

Kakashi Zabuza fight:

Kakashi summoned his Ninja Dogs to deal with Zabuza. And it worked perfectly. All the Ninja Dogs were onto Zabuza. For the ninja dogs, the hidden mist technique is child's play compared to their smell sense. All the Kakashi's ninja dogs caught onto Zabuza. They had a firm bite onto Zabuza's arms, legs, and head, Restraining him from moving. Zabuza didn't expect the hidden mist techniques's mortal enemy to be the Kakashi's summon. The Hidden Mist Technique was deactivated. It seems Zabuza is near his end.

Kakashi," This time you will be gone for sure" 

Kakashi started to make hand signs ( Hand signs: Ox → Rabbit → Monkey → Dragon → Rat → Bird → Ox → Snake → Dog → Tiger → Monkey )

"Chidori" 

Lightning started to spark in his hand giving out the electric sound. 

"This is your end Zabuza" 

With that, Kakashi ran forward towards Zabuza to strike him down.

" Ice Art: Ice Dome" (Hand sign: Single Hand Signs)

Dome made up of ice-covered Zabuza protecting him from Kakashi's Chidori. Kakashi turned his attention towards Haku. Seeing Haku, Kakashi started to worry about Naruto and Sasuke. He starts to search for Naruto and Sasuke's chakra presence to see if they are alive. After sensing their presence, Kakashi's mind calmed down a bit.

Kakashi," They are still alive. It's more than enough. They did their best. I will take these two on my own" Kakashi's determination is stronger than ever.

Zabuza was still restrained by the dogs inside the dome, so he couldn't make any move against Kakashi for now.

Haku again started to make single-hand signs.

"Ice Art: Demonic Mirroring Ice Crystals"

A lot of Ice crystal mirrors started to surround Kakashi. Kakashi didn't care much since he was confident in his Jutsu. Haku didn't make his move first, clearly waiting for Kakashi to start the fight.

(Hand signs: Snake → Dragon → Rabbit → Tiger)

Fire Style: Dragon Flame Jutsu.

Kakashi created a huge flame dragon to deal with these demonic mirrors. Flame dragon starts to destroy one mirror after mirror. 75% of the total demonic mirror is being destroyed. But the broken mirror is being replaced with new mirrors in a matter of seconds without giving Kakashi an escape route. In doing so Haku is taking a huge toll on his body compared to Kakashi.

Clearly, Haku can't maintain this for a long time. But it seems very useful in time stalling. Haku started to convert his life force to chakra just to keep Kakashi inside for the time being. Kakashi tried some of the other jutsu on Demonic mirrors. The results were the same.

Suddenly Kakashi noticed that Haku didn't attack him throughout this fight. He quickly came to the conclusion that he was stalling the time. Is he waiting for the Zabuza to overpower the ninja dogs? No. Then the only answer is the Mysterious figure. Kakashi started to understand this. Kakashi knows Haku is waiting for the Mysterious figure to help them. Time stalling is the only move Haku can use against powerful Kakashi and hopes the mysterious figure makes it in time to help them.

Kakashi started to gather a large amount of chakra to deal with these demonic mirrors and Haku in one single jutsu. Kakashi decided to end this fight with Haku in one single move.

"Let's settle this once and for all".