KHR!N-> Dictionary
Pure Flame
Pure Flame is the designation given to individuals with a Dying Will Flame Density equal or above 90%. This can be determined by special devices. It's said that the destructive power of Pure Flames is unmatched and unparalleled. This concept however caused much confusion as the Dying Will Flames were explored more and "Pureness" become a meassurement of Resolve. Although the name "Pure Flame" remained, scientists have decided that the correct term for what it meassures would be Flame Density
Known Pure Flames in history
G [95%] (Vongola First Generation Storm Guardian)
All known Arcobaleno [inbetween 92% and 95% with Reborns density reaching 95%]
Hibari Kyoya [96%] (Neo Vongola First Generation Cloud Guardian)
Fran [90%] (Kokuyo Gang Illusionist)
Catlena D'Anzo [97%] (Varia Tyr Generation Head of Medical Station)
Tyr [91%] (former Boss of the Varia)
Daniela [98%] (Vongola Eight Generation Boss)
Simon Cozzato [92%] (Simon Family First Generation Boss)
Enma Kozato [91%] (Simon Family Tenth Generation Boss)
Vero Nemesi [95%] (Nuvella Family Eight Generation Boss)
The Vongola Heir Dying Will Flame Density test
A part of the selection of the Vongola Heir is the test of the heirs Dying Will Flame Density Level. However this has been only implemented since the 4th Generation. There is no rule or tradition about the heir needing a certain percentage of density to take over the family, as Fabio, the Seventh Generation Boss could become Boss despite a tested density of just 52%. Xanxus was the first and only one that managed to break the meassuring device and has no confirmed official Flame Density Percentage.
Multiple Flames and Density percentage
Originally the meassuring of a Dying Will Flames Density was reserved for only the Vongola main family and it's heirs, though further research especially from 1970 onward has discovered a few very important details. During the 1890 there was a big discussion regarding the concept of "Pure Flames" in a more problematic and very xenophobic way. There were many who believed that you were only a true strong mafiosi if your Dying Will Flame was "pure" in the sense of possessing only one Flame Type. It was suspected that "bastards" and people who were not "purebred" italians would fall into this category, causing social problems in which the sign of two flame types was seen as someone being a bastard child out of wedlock. There were however others arguing that being able to wield multiple flame types was a sign of genius and eugenic superiority. This eventually led to a particular question regarding flame research. Who was correct?
With a study in 1970 conducted by multiple scientists and with different variations, a paper was published in 1975 with prognosis' and first results of the yearlong research. One of it's biggest findings was that the human body could not withstand 100% of Dying Will Flame Density. "If your goal is to heat up water, you want to stay below 100° Celsius to prevent it from evaporating. Otherwise you may have reached your goal, but lost the result you were hoping for." - Dr. Fernando Giusepi.
The study also found out that this meant that holding multiple flames would cause serious damage on the human body if each flame added together exceeded 100% as all flame types resided in a body at the same time, leading to the afformentioned biological constrain of only adding up to at most 99%. In a research project conducted by Dr. Catlena D'Anzo and PhD. Toya Nomura, the results showed that all meassured participants with multiple flame types showed a high overall percentage in flame density, but split among the different flame types. Furthermore it seemed that high density percentages and pureness levels were far more common among individuals with multiple flame types, with usually one crystalizing as the most dominant in an individual, dubbing the others the "secondary flame types". Dr. D'Anzo wrote in her research summary that further observation would be necesary and that this result could also in theory result in an explanation for the Flame of Wrath phenomenon, however there was no indivudual with these needed characteristics that participated in the study.
Consequences
In 1986 Dr. Catlena D'Anzo released a follow up paper on The Medical And Biological Consequences Of High Flame Density. It was a 236 page long paper of observations and about 10 years of research cleanly and transparently documenting the changes in the study- and controlgroup of about 146 people. In her study she concluded that ultimately a density percentage of over 82% can already influence an individuals health, be it physically or mentally. Individuals who actively used their flames in daily life would see an increase related to the amount of flame power used and depending on the flame density the after-effects could be massively aggravated. For people old fashionably considered "Pure Flame" the chance of severe health risks and bodily deterioration would be even worse.
However, there was no follow up study by her and further independant studies have shown similar to mixed results. It has now become a standart to warn someone who tests their flame density above 80% of it's possible repurcussions and influence on their health, though not many people take these PSAs very seriously.
Other Trivia
It is speculated that Giotto Vongola the Vongola family first generation boss also possessed a high density Dying Will Flame, however records are too few to properly deny or confirm this. His legendary status however has led to many Vongola members undoubtedly believing, that Giotto must've been the only person in history to ever reach a Flame density of 100%. Scientifically this is not possible, but it remains a firmly held belief
It's common for younger people to refrain from using "Pure Flame" as a title as it is not just scintifically incorrect, but also holds a lot of associations leading back to the big debate about wether someone was more "pure bred" if they only had one flame type, or special, because they could use multiple different types. Many older mafiosi and especially traditionalists will argue that it's just a naming convention but there is a significant shift in the cultural Zeitgeist.
In Catlenas research on the consequences of high flame density she mentions that her observation of high density sky flames has been mostly inconclusive and that it just might be the only flametype that may have either less severe repurcussions or none at all.
While Flame Density and Pureness seem to have many overlapping characteristics, they are indeed very seperate things. Flame pureness can be cultivated and changed while flame density is similar to a flame type something determined by birth. There are still people who use the two interchangably however. Notably there is still the misconception that rings break due to not matching a flames purity, when the density of the flame plays a vital role in a rings stability. In the same vein however the flame density stands in relation of how much strain someone has to conjour in order to use their flame at all. This makes people with multiple flame types more susceptible to fatigue and exhaustion when they use their flames for an excessive amount of time.
There was once a Soda brand that advertized itself as bossting your flame density and pureness, however it was completely shut down in the span of a week and the brand issued an official apology.
