Oichi remained with her husband at Odani Castle throughout the conflict, even after Toyotomi Hideyoshi, a trusted vassal of Nobunaga at the time, began laying siege to the castle.
Oichi estuvo junto a su esposo en el castillo Odani a lo largo de todo el conflicto, aun luego que Toyotomi Hideyoshi, un vasallo de Nobunaga, comenzó un sitio al castillo.