Was waiting for the puzzle pieces to come together ever since chapter 1:
He was named Noah (born with Water element affinity), and had his family/clan's name is Ararat (Mt. Ararat is a real-life mountain said to be where the biblical Noah's ark landed when the Great Flood subsided), and now this world's fief of Ararat seem to be situated in the mountains as well and with an actual 'ark' underground. So the author of the LN really was inspired by the Noah in the bible's Genesis books.
BTW, this is still getting translations (probably by another group, or officially english translated). As of the time of this writing, it is translated up to chapter 33.