[ ording to the Attribute theory by levus acher, every human in our world and even monsters are born with a certain element they are attributed to. However, most people die before they are even able to discover it or practice it...… ]


    [ The reason for that can only be expressed in one way, knowledge on this matter is far too scarce. Unlike what most children novels tell, there is no ''public practice methods'', making it a very hard aspect to develop. There are tens or even hundreds of human attributes, every practice method can be only used by humans with the same attribute, that led to even more hardship that faced humanitypared to monsters who received practice methods through hereditary memory... ]


    [ The year that this knowledge started which were newly revealed to monsters marked the start of the first serious human research on this matter, humans were the dominators of the Light era. However, now that monsters and creatures other than humans started gaining powers and even human-like intelligence, humanity was starting to lose its position. We, humans, had to take a stance ] - Light era, year 328


    ......…..


    [ Humans who were always known for their innovation, finally broke the first wall that faced them in attribute practice, reference material! Capturing and studying monsters with practice methods, led to the creation of the embryonic form of attribute practice, ''Beast Arts''! ]


    [ Although ''Beast Arts'' helped humans adapt to the great rise of power that threatened to take away their position, it had serious side effects such as lowered lifespans, going insane from practice, or even showing monster-like behaviour. There was also the hardships of capturing these monsters who already started harnessing elemental power, that led to a limited number of ''beast arts'' which could be only practiced by certain attributed humans….. ] - Elemental disaster era, year 7


    ......….


    [ Finally, humanity yed itsst card, genius! Countless researchers and practitioners who turned ''Beast Arts'' in the true andst form that humanity have been seeking '' Elemental Arts''! There was still a scarcity problem, but it didn''tst longer than 70 years. Soon after, there was enough ''Elemental Arts'' for humanity to regain its standing, ending the Elemental disaster era at a very young age, and marking the start of a new era ] - Great Elemental era, year 1


    ......….


    [ I, who lived through the turbulent era, was able to make a practice method of my own, for lightning attributed humans. However, I lost the ability to practice it as soon as I finished it...]


    [ Thus I leave ''Lightning Cell'' in your hands, whoever is reading this, I hope you can do what I was never able to... ] - Great Elemental era, year 20 by ?????????


    .........


    I looked at the blurry name of the writer which seemed to have been lost due to the book''s age, though it didn''t make sense that it was the only missing word so far.


    This lengthy introduction allowed me to finally find an answer to some of my unanswered questions, though it was quite heavy to read as an introduction, it could be considered quite a benefit for me.


    However, now that it was done, it was time to read the actual core of this book, an ''Elemental Art'' that suited my own attribute!


    I flipped the pages as I read in anticipation...