The Rector that rules over the Great Nature University. While it's appearance may not show it, it is actually a mythical beast with long life of 500 years.
It was appointed from a faculty member to the Rector at 345 years old, and it has served as incumbent for the past 155 years, the longest serving record ever since the establishment of the University. "There are no limits to knowledge". The freshmen's first class in which the Rector handles personally always begins with this line.
As one who stands at the summit of academia, his words had given endless possibilities to the students who strived to work hard in their studies.