Bleach: Mystic of the Full Moon

Our story begins right before the Bount Arc. The 13 Gotei has become the 14 Gotei ever since the Mystic War that happened 50 years ago. The 14th division is for Transfiguration and Spells, with Captain Chinatsu leading them. They are relatively new, only being around for 100 years. Their creation was to aid the Soul Society and other squads with the Mystic War.

At the conclusion of the war, Captain Yamamoto finally came to a truce with the Mystics and their leader, Lord Orlouge. He decided to give the Soul Society 50 years to recover from the war and at the conclusion of that time, a Mystic would be sent to the Soul Society to work closely with the Soul Reapers in an attempt to keep the peace between the two, during this time the Soul Society will relay information to Lord Orlouge through the Mystic.