King of Thieves

The King of Thieves (Tōzoku no ō) is the Original King of the Treasure of Thieves and was born 10,000 years before the story had begun. He travelled from places to places until he had rotten away, his skull and heart were preserved with a Protection Xin Ability and later contributed to creating the Skull of Thieves and the Devil's Heart.

Personality
The King of Thieves is shown to be an anti hero, possessing a mindset differing from an average good guy but not far enough to be in the line of a villain. He is shown to consider himself god of the world and let his abusive father die on the footsteps of his house. He is in no way classified as noble, and he is very well aware of the fact.

Later though, he had begun to realize he gave everything to the world and never had time to do anything for himself, filled with aw, he started digging into his past and saw the difference of mentalities between his past and current self. He admits to being greedy and consumed in his own ego, but the King of Thieves believes to be selfish without doing anything for himself.

Story
At the age of 17, The King of Thieves had been in the now destroyed, district 22 [Bomb Shelter]. The world was going through the Second Era of Apocalypse and it had been about half a Millenia since the sprout of Xin. As a young man fighting for survival, he had planned to escape the 22nd District by the end of his 20s but things soon went into chaos when the Bomb shelter was attacked by Raiders and the King was enslaved along with his family. He spent his next two years in the Underground city and eventually was forcefully enlisted to join the military.

While being forced to enlist, he had committed his first sin and killed two guards who were force feeding trash to the soldiers. After playing a minor part of the Underground Liberation, he became friends with a high classed scientist, Simon Bear. Him and Simon planned to go back and fight for District 22 and eventually created a revolution consisting of the duo, Luma and more than a hundred different soldiers. They ended with victory and the King of Thieves brought his parents back to the 22nd District. A crippled Luma set her house in the city alongside her friends and they lived the next two years in peace.

Abilities
Overall abilities: The King of Thieves embodies kickboxing and martial arts as a way to present fighting. He has been shown to be extremely aerodynamic and has incredible reflexes.

Enhanced Speed: At his time, The King of Thieves was known as the  man faster than a heartbeat'' '. He would later pass on the technique to multiple different fighters, and soon, the 10,000 Fists Technique would be a move inherited by 10 out of every 100 fighters.

Acute Intelligence: Being one of the world's most wanted criminals during the apocalypse, it's no rocket science to know, one must be of high intellect to survive a 1000 years in such condition. The King of Thieves fits the role perfectly, demonstrating a form strategic judgement that very few possess. His survival plan for the apocalypse turned out successful.

Shivering Presence: Due to creating the mantle called King of Thieves, his Xin energy bursts out in a terrifying way, proving himself to be no mere asset but a fairly well One many army.

Xin
Xin Energy Mastery: