Ch. 301Creating Hueco Mundo in the Shinobi World
Aizen tested whether his spiritual pressure could reshape the Pure Land and began turning its stored ninja souls into Hollows and Arrancars. After transforming several Uchiha and helping Rin Nohara and Uchiha Mikoto begin their evolution, he persuaded the Sage of Six Paths to undergo Hollowfication as well.
- Aizen released his spiritual pressure in the Pure Land and found that the subspace absorbed it, suggesting he could reshape it.
- Aizen Hollowfied Rin Nohara, Uchiha Izuna, Uchiha Fugaku, and Uchiha Mikoto; Fugaku and Izuna became Adjuchas while Rin and Mikoto became Gillian, and Aizen turned all four into Arrancars.
- Aizen proposed that Rin and Mikoto grow stronger by devouring other souls from the Sage of Six Paths' collection.
- Aizen asked the Sage of Six Paths to undergo Hollowfication, and the Sage agreed after considering how it could let him continue living and fight the Ōtsutsuki.