This had previously been confirmed on the cover of this year's tenth edition of Manga Time Kirara Carat magazine by publisher Houbunsha, published today in Japan. A promotional image for this second season was also published.
For its part, Itou has been publishing the manga in Houbunsha publishing house's Manga Time Kirara Carat magazine since 2014. The publishing house published the fifth compilation volume in June 2019.
The play inspired a twelve-episode anime adaptation produced by J.C. Staff, directed by Hiroaki Sakurai and scripts written by Keiichirou Ouchi, released in July 2019.
Source: Comic Natalie
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