"In ancient times, the epochs can be divvied up into three: Ancient Times, Ancient Era, and the Initial Era.
The Ancient Times refer to the distant past, extending from ten thousand to one hundred thousand years ago.
The Ancient Era is the ancient of the Ancient Times.
The Initial Era marks the beginnings of cultural inheritance and is the starting point of the Ancient Era, a time like the opening of Chaos.
The ancient runes comprise those from both the Ancient Times and the Ancient Era, while the Netherworld Runes are another type from the Ancient Era; combining these two types of runes can derive certain Initial Era Secret Techniques."
"Thus, once an array incorporates the transformation of these two types of runes, it signifies that the array has entered a new realm of mastery."
