In the history book, there were sixteen well-known names during the age of the apocalypse. Names like [Caishen], which belonged to the Federation's President, or [Mallarc]. Names that surfaced with the merit of preserving the civilization during the era of chaos. Names of Heroes.
But inside the old book that old Houses like the Mallarc had, where more detailed information about the era was archived, the names that came up were more than that. But those names vanished along with time; they were either lost in history as the persons did not leave a legacy behind, or getting crushed under the changes of the era. There were also those who were getting purged by others, those that lost their way, and those that lose power because of internal struggle.
House Ishtera was one of them.