Bleach: The DiamondDust Rebellion

After the treasured Ouin is stolen, Toshiro Hitsugaya disappears and becomes suspected of treason. When the Soul Society calls for his capture and execution, Substitute Soul Reaper Ichigo Kurosaki vows to prove Hitsugaya's innocence. Will the secret of the Ouin and Captain Hitsugaya's motives be revealed before his honor, his life, and the Soul Society are destroyed?