Oichi, younger sister to the influential unifier Oda Nobunaga, shares a significant familial bond noted as one of his personal vulnerabilities. Renowned for her beauty and elegance, she stands among the most admired women of her era, drawing attention from many. Her politically arranged marriage to Azai Nagamasa blossoms into genuine affection; Nagamasa experiences love at first sight, captivated by her exceptional beauty and cuteness, fostering a relationship of mutual care. This union places her directly at the heart of the conflict between the Oda and Azai clans. During the Battle of Anegawa, she endures profound emotional turmoil caught between brother and husband, demonstrating resilience amidst unavoidable familial strife where hesitation meant grave loss. Throughout these conflicts, Oichi shows loyalty and strives to protect both sides, historically sending Nobunaga a symbolic warning—a sack of beans tied at both ends—to alert him of the impending Azai-Asakura attack. Her story continues through the siege of Odani Castle, where she and her daughters are returned to the Oda clan before Nagamasa's defeat. Following Nagamasa's death and Nobunaga's assassination, Oichi enters a political marriage with Shibata Katsuie. Facing defeat at Shizugatake, she chooses to remain with Katsuie despite his pleas for her to flee, sharing his fate. Her three daughters—Chacha, Ohatsu, and Oeyo—survive to play prominent historical roles, with Chacha becoming Toyotomi Hideyoshi's concubine. Character analyses note her preference for muscular men. Across narratives, she consistently embodies grace under duress, navigating the complexities of war and loyalty through her actions and relationships.