Ten years have past by since the winter war against Sosuke Aizen and his Arrancer army. In which Ichgio and Aizen face off in a final clash of power with Ichigo emerging victorious.
Since then life in both soul society and Kakura town slowly return to normal, with Ichigo and his friends living out there lives in high school and chamber 46 the judicial system of soul society being restored and the remaining arrancer and vizord making there peace with the soul That what how it was and should have been in till the phenomenon appeared, an event that will forever change the face of soul society and the human world forever.
No one knows how or why it happen, but shorty after the winter war,all of the residents in Kakura town suddenly became spiritually aware enabling them to see the sprites of the dead, the hollows and even the soul reapers themselves and soon panic slowly began to arouse in the town.
Because of this, Chamber 46 issued several conditions for the soul reapers patrolling the world of living. The main one being that they must wear masks to hide there faces so to not arousing more superstition among populace. Two all fights must be fought outside public area's and three the most important rule is to dispose of all spiritual remains of any battle fought so that it won't be studied upon by the humans. But even through these regulations, (now known as the 'Three Rules Of Concealment) prevented the existed of pules, hollows and soul reapers from being discover by society it did little to overcome the phenomenon as it soon spread beyond the borders of Kakura town, to even across Japan itself and worse still the inhabitants within the phenomena begin to develop spiritual powers of there own.
But then when soul society was on the break of being exposed to the public a great noble man from the house of Romina named Shukie offered his services to soul society by creating the Shundo, a group of soul reapers created out of his own house guard to hunt down the Spiritual powered humans and seal there powers away to prevent them from causing any trouble. Chamber 46 with there own military stretch beyond there limits in concealing soul society from the living world, accept Shukies offer without hesitation.
Since then Shundo has become the forth military branch in soul society its troops composing both the soul reapers in the Gotie 13 and the house guard of the Romina house and when they were first deployed it was a huge success. The spiritual powered humans now called the ryoukia,were easily captured and contain many of them ether surrender to the Shundo out of fear or simply did not want to get themselves involve and though there were rumors of them being called the black bandits by the citizens and police, they remain unknown to the public.
However as the phenomena began to spread throughout the country of Japan so to did the Ryoukia and Shundo as more squads and ranks were developed in the military branch and as the years past, the Ryoukia grow more powerful, more numerous and more aware of the Shundo activity's. The Ryoukia whom were once only ordinary citizens that the Shundo hunted down in the past soon became gang man and crime lords who would not give up there power so easily and as such great conflicts were created between the Shundo, the underground crime world of Japan and even the government itself.
The Shundo who once viewed as nothing more than a rumor in japan were now seen by the public as assassins and gang men that killed innocents in the name for money and power and are often hunted down by the police as wanted criminals, turn against by the very people they were soured to protect and as the years gone by more and more Shundo were killed by the Ryoukia, which soon became too powerful for them to simple contain anymore and at many times were force to kill them as will just so they themselves can survive. In the year 2011 ten years after the phenomena began which by now has almost completely spread throughout Japan, with a third of its population having spiritual powers and the existed of the spiritual beings being only a hair lent away from being expose to the human world.
Yet the secret of the phenomena and many more,lay deep within the criminal underworld of Japan. To be uncovered by a tragic love, a unending rivalry and the foul relationship between a Grandfather and his son.