Kairai Masuna | Demon of the Black Sand

Masuna was the name given to him when he became ANBU. It is the only name he can remember now, outside of the one he adopted – Kairai. It seemed a fitting name, considering what had brought him to where he is now. Masuna cannot recall much about his past before the incident, but what is known has been documented below.

He was a skilled shinobi, ambitious and energetic in his youth, with a penchant for learning secrets. Secrets such as the techniques of Suna’s puppet masters, the identities and locations of various illicit trysts among Sunagakure’s elite caste, and battle plans of enemy villages and rouge shinobi. Perhaps this is why he was chosen, perhaps it was something else. Suffice to say, at a relatively young age the boy was enlisted into the ANBU ranks, provided a mask of black with red demonic markins painted across it, and given the name he carries to this day – Masuna.
Years passed and Masuna only grew better with each day. He worked as an Oinin for a time, hunting those unfortunate souls who dared to defy the village. His penchant for information gathering lead him to receiving an impressive number of commendations for his equally impressive capture rate. Things seemed to be going great for the young Oinin, until the day he accepted his role as ANBU Teichou, shifting back to the other side of the organization he had come to grow fond of.

He was receiving his new assignment from the Rokudaime Kazekage when it happened. An assassin broke through the door, chakra primed for a deadly attack. Masuna leaped between his Kage and the assassin, taking the bulk of a potentially deadly blow that carried both the ANBU and the assailent out the window of the Kage’s building, plummeting to the ground below. Masuna wrestled the assailent beneath him even with his wounds, and as blackness took his consciousness he felt the satisfying crunch of his enemy’s form squishing into the ground beneath him first.
And then the seemingly impossible occurred – Masuna woke up.

He woke up screaming, but he woke up – his body felt as if it was on fire, every nerve end standing on edge – and why shouldn’t it be? He was on an operating table, masked shinobi wielding secret healing techniques keeping him alive while some of the best artificers and puppeteers of the village worked on his body, tearing flesh and resewing nerves to metal using arcane rituals and techniques seemingly created as they went along.

The process he underwent was torturous, and broke the young ANBU’s mind. When he wasn’t screaming incoherently, he was babbling, crying, and begging for his life to end. And yet, he survived. He survived against all odds, and emerged no longer a mere ANBU Captain – he was a living weapon, designed to the Kazekage’s specifications and intended for use as a blueprint to make more.

And he was proud.

In his broken psyche’s currently suggestive state, the doctors and puppeteers fed Masuna a constant stream of information about exactly what they were doing – fixing him, saving his life on the Kage’s orders, and in the process he was to become the prototype for Project IZANAGI – a secret supersoldier project that would help further the might of Sunagakure. He was called Subject 0.

The modifications they performed on his body were extensive, replacing his limbs and some organs with advanced prototypes designed and crafted by the greatest minds of Sunagakure in secret. All to forge him into a blade for the Kage. It took months, perhaps years for Subject 0 had lost all sense of time, but eventually he was complete.

The ultimate warrior of Sunagakure, the demon of the black sands, Masuna had been reborn.

He ran several test missions, functioning at a level higher than any they had ever seen before. Hs primary mission function had changed from information gathering to assassination, and he performed each kill flawlessly. Enemy commanders, traitors within Sunagakure’s ranks, he handled them all.

Then came the night that the Rokudame Kazekage went missing.

During the commotion, Masuna was called to action by one of the head kugutsu shinobi of the project. But when the shinobi revealed his puppet, Masuna came to a sudden and disturbing realization. The puppet that this shinobi manipulated was the same man that had attempted to assassinate the Kage so many years ago.

Once the pieces clicked into place, it took very little time for Masuna to seek his revenge. He began with the shinobi before him, and worked his way through the remainder of Project IZANAGI – eliminating Subjects 1-4 as well, the only other ones he knew of personally. He dismantled the building piece by piece, and torched the remains. Standing atop the bloodied and burning ruins of a top-secret facility, Masuna could not help but look upon the village he once served with disgust.

Their leader had done this to him. They would all suffer his wrath.

With that, the Demon of the Black Sand disappeared into the night, hungrily pursuing his vengeance.