Authentic Records! School of Shinigami

Summary
At the beggining of the episode there is flashback with Renji Abarai, Momo Hinamori, and Izuru Kira training during their first years at the Soul Reaper Academy. Shuuhei Hisagi turns out to be a 6th year student at the school and tells all the other students that they will be going to the world of the living for a training session with fake hollows. As the training ends in the real world, the entire class is attacked by real, Huge hollows. It takes out two of the 6th year Shinigami trainees and leaves Shuuhei Hisagi by himself. He has to fend for himself and during this time the hollow attacks him and claws at his face,(revealing the reason he wears a band aid on his nose and has a claw scar on his cheek), Renji Abarai, Momo Hinamori, and Izuru Kira go to help and manage to save him. As they are gaining the upper hand Shuuhei tells them that they must retreat. They run away but they are surrounded by a group of huge hollows. As the hollows are about to strike, Lieutenant Gin Ichimaru and Captain Sousuke Aizen arrive from Soul Society to lend a hand. Aizen tells everyone that they will take care of the hollows, this is when Momo realizes that she wants to serve as a member of the Fifth Division. Then Gin uses Shinzo to kill all of the hollows, with Aizen killing the last one.