Lieutenant Momo Hinamori recalls her days in training at the Soul Reaper Academy, where she first met Captain Sosuke Aizen. In the present, the letter Aizen left for her at his death scene leads Momo to believe she has identified his killer... While Ichigo and Renji train with Yoruichi to achieve bankai, Rukia recalls a bit of her own past in a dream that she believes will prepare her to face her execution--which has been moved up to the next day! Contains episodes 46-49