Arc 27The Underworld Campaign
Uchiha Yū established a base in the Underworld, defeated an alliance of neighboring lords, and absorbed their energy as the Ōtsutsuki Clan took notice. He freed Kaguya Ōtsutsuki and secured her intelligence about the clan in exchange for chakra, leaving her ready to depart through Amenominaka.
- Uchiha Yū seized Mu Lei’s territory, made it Dawn Hidden Village, and brought Orochimaru and elite ninjas into the Underworld to build a base and gather resources.
- Uchiha Yū learned from the Sage of Six Paths that Underworld soil could hide living people from soul beasts, then had Orochimaru and Muichiro Tokito develop ways to exploit the Underworld while Shan Juhua handled trade.
- Uchiha Yū used Xue Ying to draw a neighboring alliance into Dawn Hidden Village, where Shisui, Obito, and Orochimaru trapped the invaders and drained their life energy for Yū to absorb.
- An Ōtsutsuki elder recognized Uchiha Yū and summoned him, while Yū learned that absorbing Underworld energy could contaminate a person’s mind and ordered intelligence gathered on the Ōtsutsuki Clan.
- Uchiha Yū and Shisui broke Kaguya Ōtsutsuki’s seal on the moon, then fought her after she demanded authority over the Ninja World.
- Uchiha Yū persuaded Kaguya to share her clan’s secrets by offering chakra, and she explained the clan’s factions, rulers, hierarchy, and expeditionary forces before opening a passage to Amenominaka.