In a world plagued by creatures known as Kaiju, Kafka Hibino aspired to enlist in The Defense Force. He makes a promise to enlist with his childhood friend, Mina Ashiro. Soon, life takes them in separate ways. While employed cleaning up after Kaiju battles, Kafka meets Reno Ichikawa. Reno's determination to join The Defense Force reawakens Kafka's promise to join Mina and protect humanity.
Kafka Hibino has almost abandoned his dream of joining the anti-Kaiju "Defense Force." He now works in Kaiju clean-up, disposing of the bodies of slain Kaiju and thinking back with regret to the days he spent with his childhood friend Mina Ashiro, captain of Defense Force's Third Division.
After turning into a Kaiju, Kafka is forced to flee. His escape is interrupted, however, by the arrival of another Kaiju...
Kafka arrives for one last shot at the Defense Force entry exam... but can he pass while keeping his Kaiju powers a secret?
An unexpected incident during the exam forces Kafka to use his powers at the risk of revealing his secret.
Kafka is now a member of the Defense Force, if not a full-fledged one. But Hoshina tells him he has three months to prove himself before he's fired...
It's time for Kafka's first mission, and he witnesses the true power of the Defense Force when a Kaiju strikes a nearby city.
Reno and Iharu encounter a powerful humanoid Kaiju that quickly overwhelms them. Can help arrive in time?
After transforming into a Kaiju to rescue Reno and Iharu, Kafka is found by Hoshina, who immediately attacks him.
Tachikawa base comes under attack from the air, as a powerful Kaiju has its sights set on the Defense Force.
When the Defense Force is in danger, Kafka is forced to choose between keeping his secret and saving his comrades.
Kaiju No. 8 is captured, and Kafka is at the mercy of the Defense Force's most important leaders.
Kafka's final fate is determined as the monster within him tries to take control.
Kafka goes on a mission with his new squad and faces Kaiju No. 9 once again.
A challenge begins for the next generation of the Defense Force.
Kaiju No. 9 appears for the third time, splitting in two and overwhelming the Defense Force.
Kaiju No. 9 reveals his true plan.
Narumi and Kikoru's resolve is renewed. Kafka is forced to face the price that comes with his power.
Reno Ichikawa has been chosen to wield the power of Numbers Weapon 6, the most powerful of them all.
Iharu and Reno’s trust in each other becomes a powerful weapon that leads them in battle.
Kafka learns to fight without having to rely on Kaiju No. 8's power.
A horde of Kaiju appear all over Tokyo at the same time!
The battle with No. 9's Kaiju begins in earnest.
The Defense Forces suffer severe damage from a fortitude 9.0 Kaiju that appear at the capital.
