"War Begins!" (開戦!, Kaisen!) is episode 262 of the Naruto: Shippūden anime.
The remaining members of the Infiltration and Reconnaissance Party are pursued by the Akatsuki's Surprise Attack and Diversion Platoon, but are hampered by Muta Aburame's Insect Jamming Technique. Separated from his teammates, Muta instructs his kikaichū to carry the intel they had on the Akatsuki to the Allied Shinobi Forces headquarters. Meanwhile, the Surprise Attack Division arrives over enemy airspace with Omoi feeling great apprehension about fighting in the Fourth Shinobi World War. As they land, Zaji, the group's sensor, notifies the team that his sensory abilities are being disrupted. Zaji spots an injured Muta and rushes to help him. However, it is revealed that Muta is being controlled by Sasori, with Deidara detonating the explosive clay he had stuffed into Muta's insect jar.
Using his chakra threads, Kankurō pulls Zaji away in time as Ittan adjusts the terrain to their advantage with his Earth Release: Moving Earth Core technique, although Muta dies from the explosion. With barely any time to relent, the team is set upon again by Ranka and Tokuma, their fellow comrades who are also being manipulated by Sasori. Omoi tries to use his Cloud-Style Crescent Moon Beheading technique to fend them off, but is saved by Sai, who arrives in time to deflect a secondary attack by Shin, whom Sai is shocked to see. Omoi is shocked when he finds out that Shin is Sai's brother while Shin tells Sai to run away as they cannot be killed.
Omoi becomes enraged that the Akatsuki would use such underhanded tactics as to have them fight their family and comrades and launches another attack on Deidara using his Cloud-Style Reverse Beheading technique, although the attack is a trick that frees Tokuma and Ranka from Sasori's control. Using this opportunity, Ittan raises the earth as Kankurō connects his chakra threads to Sasori's severed ones and pulls him down into the ground, causing him to crash into Deidara. As Sasori praises Kankurō's skill, Kankurō reminisces on their last meeting and unveils his Sasori puppet to use against Sasori himself.
|Role||Seiyū||English Voice Actor|
|Kankurō||Yasuyuki Kase||加瀬 康之||Kase Yasuyuki||Doug Erholtz|
|Omoi||Kunihiro Kawamoto||河本 邦弘||Kawamoto Kunihiro||Ogie Banks|
|Sai||Satoshi Hino||日野 聡||Hino Satoshi||Benjamin Diskin|
|Ittan||Takuji Kato||加藤 拓二||Katō Takuji||D.C. Douglas|
|Hoheto||Ryuichi Kijima||木島 隆一||Kijima Ryūichi||Orion Acaba|
|Zaji||Kengo Kawanishi||河西 健吾||Kawanishi Kengo||Derek Stephen Prince|
|Kiri||Shinobu Matsumoto||松本 忍||Matsumoto Shinobu||JB Blanc|
|Raidō Namiashi||Hiroshi Tsuchida||土田 大||Tsuchida Hiroshi||Patrick Seitz|
|Darui||Ryota Takeuchi||竹内 良太||Takeuchi Ryōta||Catero Colbert|
|Tokuma||Manabu Sakamaki||坂巻 学||Sakamaki Manabu||Patrick Seitz|
|Ranka||Taira Kikumoto||菊本 平||Kikumoto Taira|
|Muta||Hidenori Takahashi||高橋 英則||Takahashi Hidenori||Nicolas Roye|
|Sasori||Takahiro Sakurai||櫻井 孝宏||Sakurai Takahiro||Johnny Yong Bosch|
|Sasori (Hiruko)||Yutaka Aoyama||青山 穣||Aoyama Yutaka||JB Blanc|
|Deidara||Katsuhiko Kawamoto||川本 克彦||Kawamoto Katsuhiko||Roger Craig Smith|
|Chūkichi of the Mist||Minoru Hirota||広田 みのる||Hirota Minoru||Kyle Hebert|
|Shin||Takashi Kondo||近藤 隆||Kondō Takashi||Wally Wingert|