Rei Fuyu

Rei Fuyu (霊冬 Ghost Winter) is a kunochi from the Fuyu clan, which resided in Yumegakure.

Backstory
Rei Fuyu was apart of the Fuyu clan, which was well known for their sensory techniques. Rei was blessed with an ability that is given to one person every generation of their clan. This believed blessing was something called the Ashi Release, which needs to be awakened and has not been awakened by any of the past users. At the age of 12, when Yumegakure was destroyed by the Fake Nine Tails, Rei was the first one to awaken the abilities of the Sin Release. She was shunned for not being able to control it, and was kicked out of her own village and clan. She lived on her own outside her village which was given to her by her clan. She stayed out there for 3 years learning to control this 'blessing' given to her. While she was practicing she awakened a doujutsu that took her Ashi Release, called the Tsumigan (Sinful Eye 白罪). This took all the abilities of her Ashi Release and allowed her to disable it, the clan dubbed her as the first successful holder of their blessing. After word of this got out she was moved back in but hated it, the fact that all those who hated her were now allowing her to live with them. The next night she was asked to join the akatsuki, as word reaches them aswell. She accepted, glad to leave her god-forsaken village.

Tsumigan
The Tsumigan is the completed verson of the so called 'blessing' given to one per generation of the Fuyu Clan. This compiles the abilities of the Ashi Release and gives the user the ability to see chakra completely. It also advances the abilities of Ashi Release. Once the user with the blessing archives this their eyes turn a deep green, and when active the users eyes turn to what their eyes used to be before they achieved Tsumigan.

Ashi Release
This blessing allows the user to manipulate vines aswell as freeze anything at will (No this is not ice release, its like a coat of frost). It can be extremely dangerous to others and the user if not controlled.