"Dying Will Flames" are a special type of flame used in the Katekyo Hitman Reborn! series. They are a manifestation of a person's will and emotions, igniting when the individual is close to death or in a life-threatening situation. Each flame color represents different attributes and powers, reflecting the user's personality and abilities. These flames are linked to the Vongola family and their Arcobaleno guardians, who utilize them in battles. The flames can enhance physical abilities and grant unique skills, making them a crucial element in the series' combat dynamics.