The "Flame of Dying Will" is a powerful concept from the anime and manga series Katekyo Hitman Reborn!. It represents a unique energy that manifests when a person is faced with imminent death, allowing them to tap into their true potential. This flame can enhance abilities and grant temporary strength, making it a crucial element in battles. In the series, the flame is associated with the Vongola family and their Dying Will mode, which enables characters to fight with heightened determination. Each individual's flame can vary in color and intensity, reflecting their personality and emotional state during critical moments.