A thorough explanation of Ishikawa Kazumasa, the subject of the 2026 NHK Taiga drama "Toyotomi Brothers!", based on the latest research!

Kazumasa has long been portrayed as a "traitor," but new historical materials discovered in 2024 are strengthening the view that this traditional image should be re-examined.

What is the truth about the night before his defection, as revealed by the new historical materials discovered in 2024!?
Is the theory that Kazumasa had been secretly collaborating with Hideyoshi all along true?

Was it Hidenaga who supported Kazumasa after his defection!?

Based on the research of Yoshikatsu Sugawara and Motoki Kuroda, we delve into the Ishikawa Kazumasa defection incident.

The Japanese History Salon provides explanations of the drama's content and background information for future storylines, faster than anywhere else, after the drama airs on Sundays.

*This video may contain some spoilers for "Toyotomi Brothers!". Please be aware.

Ending BGM: Takatsugu Wakabayashi

Twitter: cocoa2448

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00:00 Opening
00:38 Chapter 1: Ishikawa Kazumasa's Defection
03:20 Chapter 2: Background of the Defection
05:42 Chapter 3: Why Did He Defect?
08:54 Chapter 4: New Historical Materials Discovered in 2024
12:00 Chapter 5: Ieyasu and Kazumasa After the Defection

We discuss the references and ending!

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■Main References
Yoshikatsu Sugawara, "Ishikawa Kazumasa's Desertion as Seen in a Newly Discovered Letter from Oda Nobuo" (Nihon Rekishi, No. 917, October 2024)

Joji Fujii, "Toyotomi Hideyoshi" (Minerva Japanese Biographical Series, Minerva Shobo)

Motoki Kuroda, "The Life of Hashiba Hidenaga" (Heibonsha Shinsho)
https://amzn.to/4qaYNpu

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■Keywords for this Era
#ToyotomiBrothers #TaigaDrama #IshikawaKazumasa #TokugawaIeyasu #ToyotomiHideyoshi #ToyotomiHidenaga #SengokuPeriod #Japanese History
　　　　　
■Editorial Cooperation
Audio Editing: ayumu-sama
Material Creation: a.yamahira-sama
Video Editing: Kurozukin-sama

*The background footage used consists of footage shot by a riverbank, as well as royalty-free images, video materials, and licensed materials. Additionally, some illustrations were created using AI processing based on images from the NHK "Toyotomi Brothers!" website (https://www.nhk.jp/g/ts/P52L88MYXY/).

*Japanese History Salon is a participant in the Amazon Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.jp.