Koneko Toujou

Koneko Toujou is a warrior and mage of Kuraihikarigakure and the Jinchūriki of the Nibi.

History
Born as Shirone', Koneko is a young Nekomata who is part of a rare species among her kind, called the Nekoshou. After losing her parents, she and her older sister, Kuroka, were later taken in by an unnamed Devil who took both of them as slaves. However, Kuroka's power as a Nekomata supposedly soon grew out of control, eventually causing her to kill her master and become a Stray Devil on the run from her pursuers. In actuality, he had planned to harm Koneko, causing Kuroka to kill him in order to protect her younger sister.

Following the incident and the failed manhunt that came after, Koneko was sentenced to death by the Devils in hopes of preventing another incident like Kuroka's from happening. However, Sirzechs Lucifer, one of the Four Great Satans and Akumakage protected her, and left her under his sister Rias' care. Due to the trauma she experienced with her sister's betrayal and murder of her master, she fell into a deep depression, eventually robbing her of nearly all of her emotions until Rias helped her out of it. It was around that time Rias gave Koneko her name and helped her with the ritual to become a Recarnated Devil.

After the capture of the Nibi by Naruto and Obito, who where hired by Sirzechs to do so, Koneko was chosen to be the holder of the beast, which was believed to be a way to help contain her powers and thus becoming a powerful weapon for the newly made village.

Powers and Abilities
Enhanced Strength and Defense: Koneko boasts a lot of physical strength and defense, thanks to her own version of Tsunade's super-strength. She can use this strength to lift heavy objects with ease and use them as projectiles or punch through hard materials such as metal. With her defense, enemy attacks have been known to bounce right off of her, including light-based weapons that would seriously wound or kill a regular Devil.

Enhanced Senses: As a Nekomata, Koneko naturally has heightened senses, which were later boosted by Nibi.

Master Hand-to-Hand Combatant: Koneko is a master hand-to-hand combatant which she uses along with her super-strength allowing her to overpower many enemies.

Senjutsu and Youjutsu User: Being a Nekomata, Koneko is able to use Senjutsu and Youjutsu but she is still learning how to use it safely.

Flight: Being a Devil, Koneko can use her wings to fly.

Blue Fire: Thanks to the Nibi sealed inside her, Koneko can breath blue fire, which is much hotter than normal fire.

Ninjutsu
Katon (Fire Release)
 * Katon: Gōkakyū no Jutsu (Fire Release: Great Fireball Technique)
 * Nezumi Kedama (Mouse Hairball)

Nippou (Ninja Arts)
 * Bunshin no Jutsu (Clone Technique)
 * Kage Bushin no Jutsu (Shadow Clone Jutsu)
 * Henge no Jutsu (Transformation Jutsu)
 * Kawarimi no Jutsu (Body Replacement Jutsu)

Taijutsu

 * Chakra Enhanced Strength
 * Tsūtenkyaku (Heavenly Foot of Pain)
 * Konoha Senpū (Leaf Whirlwind)