Arc 1Wien and Nel’s Ascent
Wien rose from a weak Ordinary Hollow into a cunning leader, built a band of followers, and pushed onward through Hueco Mundo after losing Inora and finding Nel. He tracked Nel through the Forest of Menos and finally reunited with her as she revealed her Cero Doble while battling Kaslanine and Niji.
Chapters 1–2525 summaries