Each decade of anime reflects a distinctly unique energy and the ‘00s are full of ambitious and innovative series that includes the likes of Paranoia Agent, Welcome to the NHK, Elfen Lied, and Monster. The ‘00s are a transitory period for both animation and storytelling, which results in creative risks, some of which pay off more than others.
Source：https://www.cbr.com/anime-2000s-didnt-deserve-season-two/
