GNY rose to prominence during the post-2008 recession and the shinrūi (new lost generation) of the 2010s. Key cultural pressures reflected in the trope:
This paper is a synthetic analysis for academic purposes. No real persons or commercial works are defamed. The term “gaki ni modotte yarinaoshi” is used as a trope descriptor, not a title claim. gaki ni modotte yarinaoshi!
You're referring to the Japanese manga and anime series "Gaki ni Modotte Yarinaoshi!" (also known as "I'm Going Back to High School"). GNY rose to prominence during the post-2008 recession