The official website of Houbunsha’s Manga Time Kirara Forward magazine is listing a new manga by Kinusa Shimotsuki that is a sequel of the Tonari no Kashiwagi-san manga, titled Tonari no Kashiwagi-san after days. The manga will launch in the magazine’s December 2018 issue on November 24, 2018. The listing hints that the story will focus on Kashiwagi and the other characters in college.
Shimotsuki launched the original Tonari no Kashiwagi-san manga in Manga Time Kirara Forward magazine in 2010, and ended it in August 2016. Houbunsha published 12 compiled book volumes for the manga.