Terra Formars never asked you to get attached, and this is where that stinginess pays off. Two episodes pulled straight from volumes 21 and 22, and for once the war isn't stranded on Mars: it comes home to the planet that fired the first algae and cockroaches into orbit six centuries ago. You know the rhythm by now. The freeze frame, the donor organism introduced like a wrestling entrance, the Bugs Procedure kicking in, then something bursts across the frame in a spray of chitin. Being an OVA means no broadcast shadow bars politely eating the carnage. People here are load-bearing beams rather than characters, and the story steps over the ones that snap without breaking stride, which is exactly what you signed up for after watching Annex I squads turn on each other over national orders.
The Annex I expedition returns to Earth carrying the weight of their discoveries, but the threat they've uncovered proves far more catastrophic than anyone anticipated. With the Alien Engine Virus spreading rapidly across the globe and nations fracturing over control of the cure, the international coalition that once united against the Terraformars now splinters into competing factions. Back on their home world, humanity faces a reckoning: the genetic modifications that saved soldiers on Mars are becoming a liability, and the very people meant to save civilization are being hunted by those they were sent to protect. This OVA captures the pivotal moment when the battle shifts from Mars to Earth itself, where biological warfare and political conspiracy threaten to destroy what the Terraformars could not. The crew must navigate betrayal from within their own ranks while grappling with the horrifying truth about the virus's origin. Survival now means confronting uncomfortable questions about what humanity is willing to sacrifice in the name of preservation.