Saga of Tanya the Kunoichi

"Lord, grant me the strength to wield the power that flows within me, and guide my hand as I strike down those who stand against me".

As the prayer left my mouth, I added a curse to Being X in my heart.

Kyuubi in the subconscious space chuckled in amusement hearing the 'prayer' again; and felt the hatred contained in Tanya for the 'Being X' for a moment. Kyuubi leaks out his chakra, lending his power to his unique partner in exchange for benefits.

The glowing red demon-like eyes behind the mask locked onto the target below. Flood of red chakra of Kyuubi flows inside her body, through her hands, conducting into the metals and seals of Asura Mk. II. 

Tides of red chakra gather - negative and positive energy collides and coalesces, condense, and rapidly spin at the end of the chakra gun.

Blinding red light, akin to a bloody star emanating unimaginable power stands clear among the clouds.

The guard standing by on the ground finally noticed the red light in the sky, as if there's a star in the middle of the day light sky which is out of ordinary.

"What is that…?".

However, before he can inform anyone or figure it out-

Bijuu-Rasendan. (Bijuu Spiralling Bullet)

The condensed mass of chakra launched through the air.

…

As it landed, for a second it hit a translucent barrier - that shatters like glass on contact. The condensed mass of energy exploded in the next split second.

BOOOOMMMM!

The entire building is completely annilihated, leaving a 20 meters radius gully in it's stead. Trees and ground shook in that moment as the explosion subsides…

…

Silence ensues as the other ANBU standing guard nearby watches in awe.

"Captain is really powerful… the barrier is completely useless…". Hawk said in almost reverence, looking at their captain still in the sky - codenamed Fairy - or more known as Devil of Konoha by higher ups and other great Shinobi villages.

Fairy flies down to meet her team members, waiting for confirmation from their sensor.

After seconds of silence, Rabbit appears beside their captain.

"All signs of chakra disappeared. All targets were annihilated".

Fairy let out a smile behind the mask. Another mission completed.

"Let's get back".

'Yes, captain!', the others replied.

As Tanya heads back to Konoha, she recalls her stupid twin brother.

I should see what that brat is doing later. It's been some time since I checked on him. 

Tanya grumbled inside. Wondering if he's causing trouble, again, and would cause her reputation as her supposed sister to fall and would affect her overall position and chance to rise. 3rd Hokage had already advised her to keep an eye out for him and she's afraid she somewhat failed to do that, relatively speaking, from what she understands from her observation of what a sibling relationship should be like. Although she thought she did enough. Putting him aside…

I will get it this time. A laid back position in the upper echelon, and enjoy this life leisurely. Cursed Being X, just you wait and see!

Tanya is already calculating how her performance would be evaluated by Third Hokage and Danzo-sama.

…

Danzo read the mission report, revealing a rare smile for her student and loyal subordinate.

Hiruzen, with the jinchuriki under me, your time as Hokage will soon come to an end. And it's my time to lead the village to its glory!

The story of Tanya von Degurechaff in her 3rd life- now Tsuyu Uzumaki, the twin sister of the original protagonist Naruto, has only begun.