[4] In an interview, Chinozo said the situation was "becoming dark" due to the spread of the COVID-19, so he wanted to make some upbeat music.

[9] In a trending topic on Twitter in 2021, participating tweets interpreted some lyrics of the song as "yandere" and "scary".

[13] Japanese singer Sou [ja] hailed the illustration as "kawaii, fashionable, and coolness coexisting".

[17] In 2024, McDonald's Japan collaborates with Goodbye Sengen to promote its new evolution Cheese Bacon Potato Pie.

[18] On March 4, 2021, "Goodbye Sengen" reached fourth place on Spotify's "Viral 50 - Japan" chart.

[10] The sequel volume "Shamer" was released in April 2022 and tells the story of "Goodbye Sengen" four years later.

[54] Illustrated by Iri Arata, it was serialized in ASCII Media Works' Dengeki Daioh magazine from July 27, 2022,[55] to May 27, 2024.

An audio drama adaptation by Kiki Anime under STUDIO koemee started airing in August 2022.