The second volume of the Mars Red manga revealed that it will reach its climax in its next volume, which will therefore be the third volume.
Synopsis
MARS RED takes place in 1923, when vampires have existed for a long time. But now, vampire numbers are increasing, and a mysterious artificial blood source called Ascra has appeared. The Japanese government, in turn, creates "Code Zero," an army unit tasked with taking down vampire forces. And what better way to track vampires than by utilizing vampires?
Created by Lieutenant General Nakajima, this unit historically operates in information warfare but has been reassigned to resolve the vampire crisis. It's up to Code Zero and the S-Class vampire Deffrot to investigate this increase and put an end to it before society collapses.
It is worth remembering that the work has an anime produced by Funimation that is currently underway.
The Mars Red manga launched in Monthly Comic Garden in January 2020.
Source: ANN
