Reclaim! The Power of the Shinigami

Rukia is taken back to Soul Society as Ichigo is helpless against Byakuya's fierce attack.  His life saved in the knick of time by Urahara, and Ichigo is determined to go to Soul Society to save Rukia.  The next day at school, Ichigo is shocked to find that Rukia has been totally erased from his classmates' memories. However, a few remember her existence.  And Urahara begins special training with Ichigo to restore the spiritual power he lost.Source: crunchyroll