# Rise of Toyotomi Hideyoshi after Oda Nobunaga

> Live situation record from CLSTR: https://clstr.news/situations/rise-of-toyotomi-hideyoshi-after-oda-nobunaga
> Updated: 2026-08-21T21:00:00.000Z. Sources: 5. Developments: 3.

Historical analyses of the power struggle following the death of Oda Nobunaga focus on the Kiyosu Conference and the subsequent rise of Toyotomi Hideyoshi.

Research indicates that the marriage between Shibata Katsuie and Oichi, often viewed as a defensive union against Hideyoshi, was likely a political arrangement brokered by Hideyoshi himself during the Kiyosu Conference. Historical documents such as the ‘Nanko Zatsuroku’ suggest this union may have been linked to territorial reallocations, such as the exchange of Nagahama Castle. While Hideyoshi initially reached agreements with Katsuie, he later took unilateral actions, including forcing through Nobunaga’s funeral arrangements, which contributed to the eventual conflict.

Hideyoshi consolidated power by championing Sanboshi, Nobunaga’s grandson, as the legitimate successor. This strategic positioning allowed Hideyoshi to secure a leadership role within the Oda hierarchy. As Sanboshi grew, he was granted the name Hidenobu—incorporating a character from Hideyoshi’s name—signifying his integration into the Toyotomi political order. While Sanboshi was eventually granted Gifu Castle, his life was defined by the transition between the Toyotomi and Tokugawa eras.

The rivalry culminated in the Battle of Shizugatake in 1583, a decisive conflict that split the Oda clan’s vassals. A key turning point was Maeda Toshiie’s decision to shift his allegiance from Katsuie to Hideyoshi, establishing him as a cornerstone of the Toyotomi regime. The battle was characterized by extensive fortification networks and saw the rise of the ‘Seven Spears of Shizugatake,’ young generals who gained prominence under Hideyoshi’s favor.

## Timeline

### 2026-08-21: Battle of Shizugatake: Hideyoshi and Katsuie conflict

Historical analyses and the NHK drama ‘Toyotomi Kyodai!’ examine the Battle of Shizugatake, focusing on Maeda Toshiie’s strategic shift and the massive fortification efforts used by Hideyoshi and Katsuie.

2 sources. https://clstr.news/cluster/battle-of-shizugatake-hideyoshi-and-katsuie-conflict

### 2026-08-08: Kiyosu Conference and the rise of Toyotomi Hideyoshi

Historical analysis of the Kiyosu Conference examines how Toyotomi Hideyoshi utilized the legitimacy of the young Oda Sanboshi to secure leadership following the death of Oda Nobunaga.

4 sources. https://clstr.news/cluster/kiyosu-conference-and-the-rise-of-toyotomi-hideyoshi

### 2026-08-07: Historical analysis of the rivalry between Hideyoshi and Katsuie

Historical analysis reveals that the marriage between Shibata Katsuie and Oichi was likely a political agreement involving Toyotomi Hideyoshi, rather than a defensive alliance.

2 sources. https://clstr.news/cluster/historical-analysis-of-the-rivalry-between-hideyoshi-and-katsuie

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Cite as: Rise of Toyotomi Hideyoshi after Oda Nobunaga. CLSTR, https://clstr.news/situations/rise-of-toyotomi-hideyoshi-after-oda-nobunaga