How did Hojo Soun become the "first Sengoku daimyo"?

Yakumo Koizumi and Setsu：The work of Nishida Sentaro, the model for Nishikori in "Bakebake," and what supported the creation of this masterpiece

Heizo Hasegawa：His battles with heinous criminals and unconventional investigations... Why was he the only one to achieve them? A "historical detective" investigates the truth and uncovers his unknown exploits.

Takeda Katsuyori：450 years since the Battle of Nagashino: A historical detective depicts the tragedy of a young, great general, incorporating the latest research findings and thorough on-site investigations

Yoshikage Asakura：He was considered one of the "three men closest to conquering the world" during the Sengoku period. What is the reason for his high reputation alongside Nobunaga and Shingen? The latest research reveals his "unknown side"

Shinsengumi："Episode Zero" in "History Detective": Why did the farmers of Tama change the course of history? A thorough investigation into their origins

Godzilla："Huh?" "I'm so excited" - NHK history program features the "passionate thoughts" of the original producers. Could the influence that even the US government feared be revealed in classified documents?