Bleach Volume 27

Under orders from Aizen, Ulquiorra demands Orihime to leave with him or he would kill all her friends. She is forced to comply and is given twelve hours to say goodbye to one person while wearing a bracelet that makes her invisible. Meanwhile, Hitsugaya defeats Luppi while Ichigo is overwhelmed by Grimmjow after being unable to use his hollow powers completely. Grimmjow nearly kills Ichigo, but is saved by Rukia as Shinji Hirako comes to her aid and takes over fighting Grimmjow. The fight soon when ends when Ulquiorra orders all the arrancars to fall back as they achieved their mission. Finding Ichigo recovering from his injuries, she confesses her feelings for him and heals him before leaving with Ulquiorra. The next day, Ichigo and his friends learn of Orihime's disappearance is gone and that the Soul Society has no intention of saving her. But Ichigo, unwilling to abandon Orihime, turns to Urahara for a means to enter the hollows' world of Hueco Mundo, joined by Uryū and Chad. After arriving in Hueco Mundo, the group find themselves facing the Arrancars Demōra and Iceringer. Meanwhile, Orihime is brought before Aizen and is asked demonstrate her power by restoring Grimmjow's arm. Grimmjow then asks Orihime to restore his tattoo before killing Luppi to regain his rank among the Espadas.

Goodbye, Halcyon Days
Contains chapters 234 - 242.