Shinpu Castle was a Japanese hirayama-style fortress from the Sengoku period, situated in what is now Nirasaki, Yamanashi Prefecture. It served as the main stronghold of warlord Takeda Katsuyori. Designated as a National Historic Site in 1973, the castle occupies a strategic position on a mountain with steep cliffs, overlooking the Kamanashi River to the west of Kofu, where Takeda Shingen’s Tsutsujigasaki Castle once stood.
Oda Nobutada (1557 – June 21, 1582) was a samurai and the eldest son of Oda Nobunaga, known for his active role in several battles during Japan's Sengoku period. He led armies under his father's command in campaigns against Matsunaga Hisahide and the Takeda clan.
Takato Castle, located in the city of Ina in southern Nagano Prefecture, Japan, was a notable stronghold during the Sengoku period. By the end of the Edo period, it was the residence of a cadet branch of the Naito clan, the daimyo of the Takato Domain. Also known as Kabuto Castle, it was originally constructed in the 16th century and is now mostly in ruins.
Takatenjin Castle was a yamashiro-style fortress from Japan's Sengoku period, situated in the Kamihijikata and Shimohijikata districts of Kakegawa, Shizuoka Prefecture. Designated a National Historic Site in 1975, with an expanded protected area in 2007, its ruins remain a significant historical landmark.
Imagawa Ujizane (1538 – January 27, 1615) was a Japanese daimyō who lived through the Sengoku and early Edo periods. He became the tenth head of the Imagawa clan, following in the footsteps of his father, Imagawa Yoshimoto. Ujizane was the father of Imagawa Norimochi and Shinagawa Takahisa.
Hojo Ujiyasu (1515 – October 21, 1571), the third head of the Odawara Hojo clan, was a formidable daimyo known as the "Lion of Sagami." Revered as a fearsome samurai and brilliant strategist, he became famous for successfully breaking sieges by renowned warlords Takeda Shingen and Uesugi Kenshin. Ujiyasu was the son of Hojo Ujitsuna, and his only known wife was Zuikei-in, sister of Imagawa Yoshimoto. Among his children were Hojo Ujimasa and Uesugi Kagetora.
