Arc 2The Rain Front
Uchiha Yū grew stronger while navigating Sand Village politics, a betrayal within his own clan, and Danzō’s attempt to recruit him into Root. As war began, he served as a medical ninja on the Rain front, where his radiation ability helped repel a Hidden Mist attack and news arrived that Hanzō’s forces were targeting Konoha’s vanguard.
- Orochimaru led Uchiha Yū, Nawaki, and Hyuga Reiko on an escort mission for Sand Village ninja, and Yū killed Rain ninja who ambushed them at Hot Springs Village.
- After the Sand delegation reached Konoha, Hiruzen Sarutobi negotiated an alliance with Ebizo, while Uchiha Yū trained and prepared for the coming war.
- Tsunade examined Uchiha Yū’s unusual strength and assigned him to a supply mission to Sand Village, where Rain ninja ambushed the convoy and Yū killed Uchiha Shuiyun for betraying Konoha.
- Uchiha Yū helped treat the wounded in Sand Village, then returned to Konoha and admitted to Uchiha He that he had killed Shuiyun, and He protected him from clan repercussions while Danzō separately tried to force him into Root.
- After Uchiha Yū killed Kaizuke, the Sand Village declared war on the Rain Village, and Yū joined Konoha’s deployment as a medical ninja under Tsunade.
- At the Rain front, Uchiha Yū proposed a hospital triage system, but after the fighting intensified he chose to join Tsunade’s field medical team despite her concerns.
- Tsunade led the team to a battlefield ambush, where Uchiha Yū used radiation, genjutsu, and Fire Release against Rain and Mist ninja while Tsunade fought Mishita Tanaka.
- Uchiha Yū’s radiation poisoned Tianyeshui and three Mist ninja, forcing Mishita Tanaka to retreat, and Tsunade ordered the wounded returned to report that Hanzō’s forces were targeting the vanguard.