Yu Sasuga: 21 books

The Terraformars have infested Japan and the war for Earth is on! The aliens have evolved and so have Earth’s warriors, striking back against the invaders in new and powerful ways. As Japanese and American fighters face the onslaught, Michelle sets out on a mission to take Shokichi away from General Kai…

After humanity’s first manned mission to the Red Planet was lost, a second expedition arrives. The explorers prepare to exterminate the cockroaches that were used to transform the Martian environment, but are shocked to discover that the insects have mutated into giant, aggressive humanoids with...

Thailand, twenty years after the ill-fated Bugs 2 mission. Two American U-NASA agents arrive to find Akari Hizamaru, a “child born after the procedure,” and recruit him for Annex 1, a new mission to Mars. The purpose of Annex 1 is to research the origins of a new disease that is ravaging the earth....

A new mission to Mars, Annex 1, is under way. Their mission: crucial research into the A.E. virus currently plaguing mankind. The mutant Terraformars, giant humanoid cockroaches, may hold the key to a cure. Unfortunately for the crew of the Annex 1, the Terraformars have somehow gotten on board the...

In order to protect their crewmates, Akari and Michelle use their abilities and head into battle against the Terraformars, who have evolved unique and terrifying new forms! The enemy’s astounding strength forces them into an unexpectedly desperate fight. Meanwhile, the whereabouts of the other...

As the various teams try to make their way to Annex 1, Team 5, made up of Germans and South Americans, comes under ferocious attack by the Terraformars. The team leader, Adolf, struggles to survive against all odds. The American and Japanese members of Team 1 have their own battles to fight against an enemy that keeps coming, keeps adapting and won’t stop until all the humans are dead!

Keiji Onizuka and Team 1 are fighting as hard as they can, but the Terraformars use a clever stratagem to put them in a tight spot. Running low on their serum, the members of Team 1 may be finished unless Akari and Michelle can bail them out. But will engaging the new Terraformar cause Akari to lose...

As the situation on Mars intensifies, back on Earth, the nations involved convene to negotiate their interests. China makes an offer of a rescue ship, forcing those at the council to choose sides. As the leaders deliberate, the humans on Mars find their conflicts reflecting those back home, as members...

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...

Pursued by Division 4, Akari and Michelle encounter a Terraformar with bullet ant characteristics. Realizing this creature has stolen her deceased father’s strength, Michelle stands her ground alongside Akari. The two will be pushed beyond their limits in this fight, but even more formidable opponents are lining up to fight them, and their human enemies are still out there as well…

A giant swarm of Terraformars is bearing down on the escape vehicle where Bao from Division 4 is holding Akari and the others captive. Virtually defenseless, Bao contemplates a horrific course of action. Meanwhile, Marcos and his team head underground with a plan to hack into the Annex’s communications...

In a bid to contact Earth for help, Keiji and the others from Division 1 infiltrate the Annex 1 and head for the communications center. With the release of Hong’s bioweapon, the mission is dangerous even without the ongoing threat from the terraformars. Getting a message through to Earth may be...

Countless swarms of Terraformars close in on Shokichi and the others as they try to rejoin Akari’s group. The struggle for survival looks grim as one disappointment and setback follows another. Reinforcements from China are arriving on Mars, but is their mission objective to rescue or to exterminate?

The Annex 1 survivors find themselves fighting on all fronts against the Chinese forces sent from earth to wipe them out. As if that weren’t enough, the Terraformars themselves aren’t letting up on their attacks either. A plan is formulated to rescue the Annex 1 crew, but to carry it out, they’ll have to cross through hostile territory while under assault all the way!