Oshima launched the Joshi Kōsei Girls-High manga in Futabasha’s Weekly Manga Action magazine in 2001 and ended its first run in Comic High! in 2007.
Oshima launched the second run of Joshi Kōsei Girls-High in March 2014 in Comic High!, and ended it in 2016.
She then started Joshi Kōsei Girls-Live, a sequel set several years later, in the inaugural issue of Futabasha’s Comic Sumomo magazine in 2010 before moving that series to Comic High! (after Comic Sumomo ended publication in 2013).
High School Girls manga creator Towa Oshima revealed on her Twitter account on Tuesday that she will launch the Daishinyū (Best Friends) manga series in the July issue of Shonengahosha’s Young King Bull magazine on June 4.