In this world, there are innate skills that are special.
Innate skills are basically something that are unique to that person, so aside from them, no one in that particular timeline has exactly the same thing.
The innate skills are something that represents a person, a creature, or even the 'beings that can't be defined'.
But, there are some skills that can be passed down through natural means and they are mostly racial skills or genetic skills. The racial skills that energy beasts possess, as well as special skills like Alf and aunt Haze's eye powers, are an example of these skills.
But there are also some special innate skills that appear in the world with the same names and functioning throughout the passing of time.
They are skills with such absurd functions, such great strengths, and such diverse utilizations that they are termed pinnacle skills.