Waiting....

Riku stood at the gates, hiding in the shadows for her sister to show up.
"Time to settle this..."

Appears by her side

"You took your time..."

laughs.

grins
"and now we wait for HER..."

Waits.

Riku's eyes glinted as she saw that familiar ice blue hair heading towards them
"Hello little sister..."

Tatsuki snarled and moved further outside the gates
"I lost my sister years ago...she betrayed us, she's dead to me,"
she flexed her left wrist, where the Hidden Fang was positioned, still hidden for now

Riku's eyes narrowed
"You think you're so clever...but you won't think that for much longer, mongrel!"

"I could say the same for you, traitor!"

They both snarled viciously and leapt at each other, their companions Kira and Kairi doing the same. Every move was positioned to kill. Every swipe, every punch, kick, scratch and slash. The battle went on for a good 2 hours before Tatsuki jumped away and crouched low to the ground.
"Inuzuka Style: Man Beast Transformation Combo: Two Headed Wolf!"

Name: Inuzuka Style: Man Beast Transformation Combo: Two-Headed Wolf
Rank: B
Using a modified form of a Combination Transformation, the owner and companion transform themselves into a large, two-headed wolf, with great resemblance to the companion. In this form they use Dual Wolf Fang.

As soon as her and Kairi were fused into the hugs 2 headed jet black wolf, they used their final jutsu with their remaining chakra

Name: Wolf Fang Over Fang
Rank: B
After the users companion uses Dynamic Marking to mark a target, both they and the owner use Man Beast Combination Transformation: Double-Headed Wolf to become a large, two-headed wolf. The two then perform a much more powerful Double Piercing Fang attack. Like the lesser version, they spin rapidly to attack their target. Unlike the previous version, however, they move so rapidly that they can't see where they're going, hence the reason for the earlier Dynamic Marking, which allows them to track their opponents via the distinctive scent. This attack is powerful enough to cut a person in two, and even dent a Rashomon gate. Even if the attack misses, its speed is so great that the surrounding air can slice like a blade.

Such power is not without its drawbacks, however. Not only as does this attack effectively blind both the owner and their companion for its duration, but it tires them such that they can only perform it twice before requiring rest.

They seperated after that technique, injuring both themselves and Riku badly. The 3 of them collapsed, totally exhausted and injured

Is sleeping on a bench.

Tatsuki pulled herself to her feet and flicked her left wrist, making Hidden Fang slide out of its hiding place inside her gautlet. She watched in comtempt as her sister stumbled to her feet
"How does it feel to lose to the person you wanted to destroy...?"
she hissed as she felt her bijuu's chakra flowing through her veins

Riku snarled
"Shut up....you're a mongrel...you could've been a vessel for ANY bijuu but it had to be a CAT,"
she smirked

"YOU sealed it inside me, not like i had a choice..."

Riku growled
"Details, details...we'll meet again soon, little sister,"
and with that she limped into the shadows, out of sight

Wakes up.