Suzune Yagami, a refined milf and accomplished ikebana master, runs a traditional flower arrangement school. Her son, Tatsuya, has always resented it—forced to study ikebana since childhood, he was mocked as "girly" and developed a deep aversion to the art. One day, Tatsuya learns his crush, classmate Yui, is transferring schools. Desperate to give her a meaningful farewell gift, he struggles to find the right gesture. Sensing his distress, Suzune gently suggests, "Why not arrange some flowers for her?" Reluctant at first, Tatsuya finally agrees, pouring his unspoken feelings into a heartfelt floral arrangement for Yui. But as emotions bloom, forbidden desires between mother and son begin to stir—igniting a secret, incestuous passion that threatens to unravel them both. From Madonna's Obasan label, this Incestuous Adultery series entry explores taboo desire, Milf seduction, and intense cowgirl intimacy.