Editing Toyotomi Hideyoshi (section)

=== Death of Nobunaga ===
{{Main|Honnō-ji incident|Battle of Yamazaki}}

On June 21, 1582, during the [[Siege of Takamatsu]], [[Oda Nobunaga]] and his eldest son and heir [[Oda Nobutada|Nobutada]] were both killed in the [[Honnō-ji incident]]. Their assassination ended Nobunaga's quest to consolidate centralised power in [[Japan]] under his authority. Hideyoshi, seeking vengeance for the death of his lord, made peace with the [[Mōri clan]] and thirteen days later met [[Akechi Mitsuhide]] and defeated him at the [[Battle of Yamazaki]], avenging Nobunaga and taking his authority and power for himself.<ref name=Cassell />{{rp|275–279}}

Meanwhile, the [[Hōjō clan]] and the Uesugi clan invaded Kai and Shinano province when they heard of Nobunaga's death, beginning the [[Tokugawa Ieyasu#Tenshō-Jingo war|Tenshō-Jingo war]].{{efn|The name "Tenshō-Jingo War" was coined by Tashiro Takashi in 1980.<ref>{{cite book |author1=Okamoto Ryoichi (岡本亮一) |title=日本城郭史研究叢書 第8巻 大坂城の諸研究 |trans-title=Japanese Castle History Research Series Vol. 8 Various Studies on Osaka Castle |date=1982 |publisher=名著出版 |isbn=4404010362 |pages=412–413 |url=https://www.kosho.or.jp/products/detail.php?product_id=445990645 |access-date=June 6, 2024 |language=Ja}}</ref><ref>{{harvtxt|Okamoto Ryoichi (岡本亮一) |1982 |pp=41-42}}</ref>}}<ref name="Tensho Jingo war">{{cite web |author1=Masaru Hirayama |title=天正壬午の乱【増補改訂版】─本能寺の変と東国戦国史 |trans-title=Tensho Migo Rebellion [revised and enlarged edition] - Honnoji Incident and the history of the Sengoku period in the Togoku region |url=https://sengokumap.net/history/1582-4/ |publisher=Ebisukosyo |access-date=May 17, 2024 |language=Ja |date=2016}}</ref>{{sfn|Hirayama|2015|pp=82,124,126}} When the Oda clan learned of the defeat of [[Takigawa Kazumasu]] at the [[Battle of Kanagawa]] by the Hōjō clan, Hideyoshi sent a letter to Ieyasu on July 7 giving him authorization to lead military operations to secure the two provinces from the Hōjō and Uesugi clans.{{efn|Ieyasu's position and actions here are not those of an independent feudal lord, but as a feudal lord under the Oda regime, with the aim of defeating the Hojo clan<ref>{{Cite journal|author=Miyagawa Nobuo |date=2012|title=天正期北関東政治史の一齣 : 徳川・羽柴両氏との関係を中心に |trans-title=A Scene in the Political History of Northern Kanto during the Tensho Period: Focusing on the Relationship with the Tokugawa and Hashiba Clan|url=http://repo.komazawa-u.ac.jp/opac/repository/all/32738/|journal=駒沢史学|issue=78|pages=19–37|publisher=駒沢史学会|issn=0450-6928}}(Addendum: Kazuhiro Marushima (丸島和洋), 2011, page 4)</ref>}} As the war turned in Ieyasu's favor and Sanada Masayuki defected to the Tokugawa side, the Hōjō clan negotiated a truce.<ref>{{cite book |author1=Masaru Hirayama |title=真田信之 : 父の知略に勝った決断力 |date=2016 |publisher=PHP研究所 |isbn=9784569830438 |url=https://www.book61.co.jp/book.php/N74723 |access-date=May 17, 2024 |language=Ja}}</ref> Hōjō Ujinobu and [[Ii Naomasa]] were the Hōjō and Tokugawa representatives for the preliminary meetings.<ref>{{cite book |author1=Aida Nirō |title=日本古文書学の諸問題 |date=1976 |publisher=名著出版 |url=https://books.google.com/books?id=SrANAQAAMAAJ |access-date=May 15, 2024 |language=Ja}}</ref><ref>{{cite book |author1=千葉琢穂 |title=藤原氏族系図 6  |trans-title=Fujiwara clan genealogy 6 |date=1989 |publisher=展望社 |page=227 |url=https://www.kosho.or.jp/products/detail.php?product_id=3188838 |access-date=May 15, 2024}}</ref> Representatives from the Oda clan such as [[Oda Nobukatsu]], [[Oda Nobutaka]], and Hideyoshi himself mediated the negotiation until the truce officially took effect in October with both Ieyasu and [[Hōjō Ujinao]] exchanging family members as hostages as a sign of goodwill.<ref>{{harvtxt|Kazuhiro Marushima (丸島和洋)|2015|p=33–52}}</ref>