Terra Formars Vol. 8 (manga)

In a sad reflection of the situation on Earth, factions among the human explorers on Mars fall into conflict with each other, a fight they can ill afford as the relentless Terraformars continue to close in on them. The cockroaches have begun to display more human-like qualities, and the battle becomes even more desperate. If the humans can't set aside their differences long enough to face this threat, death is the only guaranteed outcome...