Izumi Nase

As the eldest daughter and reigning head of the Nase family, Izumi Nase commands her clan with unwavering authority while shouldering the critical responsibility of keeping watch over Akihito Kanbara. A formidable boundary warrior in her own right, she approaches every situation with calculated calm and iron resolve—never hesitating to employ ruthless measures when the family's honor or the world's stability hangs in the balance. Beneath her composed exterior lies a past shrouded in mystery, making her one of the series' most compelling and inscrutable figures.