After losing her husband, Asami, wishing only for the happiness of her daughter Sana, vows before her late husband's portrait to stay positive despite her deep sorrow. She finds temporary relief when Sugiura from the life insurance company informs her that she'll receive a payout sufficient enough to maintain her lifestyle without hardship. However, there's an unnaturally sinister gleam in Sugiura's eyes—something deeply unsettling.