It was announced on the fourth compiled volume of Ichigeki manga on Thursday that the history drama manga series is confirmed to have a film adaptation.
Ichigeki is created by Jiro Matsumoto and it is a period drama based on the novel Bakumatsu Ichigeki Hissatsu-tai (Bakumatsu One-Hit Kill Team) by Yoshio Nagai.
The manga adaptation was launched in Comic Ran manga in April 2016. It is center on a farmer named Ushigoro who joins a special fighting force with other farmers.
Source: Comic Natalie, Anime News Network