Over a hundred years ago, the Soul Society was attacked by an unknown group that dealt a serious blow to the Seireitei before suddenly retreating. What was left of the Gotei 13 restored their home back to its former glory over the course of 40 years. Ten years later, the unknown enemy launched another assault on the Soul reapers. Unlike the previous attack, the Soul Reaper had prepared themselves for the coming moment which allowed the refurbished Gotei 13 to bring the enemy down to its knees in numbers. However, before they could land the finishing blow, reinforcements came to the enemy's aid and with the extra amount of troops, they were able to overpower the Soul Reapers. One by one, the Captains of the Gotei 13 had begun to fall, causing the Captain Commander to step in. With the Head Captain's strength, they managed to repel the mysterious group....but he and everyone else knew that the next time the group appeared, his power would no longer be enough. It's been 45 years since that battle and the Soul Reapers have been training harder than ever for their pending return. New recruits are also joining every day in order to fortify the Gotei 13's numbers but will that be enough? Who knows?