Arc 3Peace, Reforms, and Watchers
Zou Hyuga and Oto Uchiha accompanied Minato to Iwagakure, then returned to Konoha as the Fourth Hokage pursued political reforms and Zou continued experimenting with natural chakra. The arc ended with Zou and Oto guarding Kushina amid growing political tensions and the Masked Man's interest in Konoha.
- Kakashi, Zou, and Oto escorted Minato to Iwagakure, where the young ANBU fought Iwagakure ninja and helped prevent Kakashi from killing an opponent during the spar.
- Minato and Ōnoki signed a peace agreement, and Zou and Oto returned to Konoha after Minato granted them leave.
- Zou experimented with natural chakra and ninja beasts while Minato pursued reforms and Danzo and Orochimaru continued their secret dealings.
- Minato gained support from Shikaku, Choza, and Inoichi for his reforms, while Nagato revived Akatsuki and the Masked Man planned to make Konoha remember pain.
- Minato assigned Zou, Oto, and Kakashi to protect Kushina, and the squad visited the Heroes' Cemetery, where the Masked Man later appeared with Zetsu.
- During Kushina's guard duty, Zou noticed unidentified ninja watching her, while Kushina gave the ANBU gifts and invited them to dinner.
- Zou returned Oto to the Uchiha compound and hoped Minato would remain Hokage despite the dangers facing him.