Gifu Castle
Hidenobu followed in serving under Ishida Mitsunari during the Battle of Sekigahara in 1600. Before the battle, he had controlled Gifu Castle, an important element in Mitsunari's overall plans; however, he ended up losing the castle during the Battle of Gifu Castle against Ikeda Terumasa and Fukushima Masanori. After losing at Sekigahara, Hidenobu's vassals committed "seppuku" in Gifu Castle. The blood-stained floorboards eventually became the ceiling in Sōfuku-ji in Gifu. The ceiling is now called the . Hidenobu himself died five years after the defeat at Sekigahara.