Kaiju No. 8 volume 1 features story and art by Naoya Matsumoto.

Kafka wants to clean up kaiju, but not literally! Will a sudden metamorphosis stand in the way of his dream?

With the highest kaiju-emergence rates in the world, Japan is no stranger to attack by deadly monsters. Enter the Japan Defense Force, a military organization tasked with the neutralization of kaiju. Kafka Hibino, a kaiju-corpse cleanup man, has always dreamed of joining the force. But when he gets another shot at achieving his childhood dream, he undergoes an unexpected transformation. How can he fight kaiju now that he’s become one himself?!

Kafka hopes to one day keep his pact with his childhood friend Mina to join the Japan Defense Force and fight by her side. But while she’s out neutralizing kaiju as Third Division captain, Kafka is stuck cleaning up the aftermath of her battles. When a sudden rule change makes Kafka eligible for the Defense Force, he decides to try out for the squad once more. There’s just one problem—he’s made the Defense Force’s neutralization list under the code name Kaiju No. 8.

Kaiju No. 8 volume 2 features story and art by Naoya Matsumoto.

The final test of the Defense Force has come to an end, but the examinees’ challenges aren’t over yet. A mysterious humanoid kaiju revives a neutralized honju and sics it on Kikoru Shinomiya. Just when Kikoru seems to be at the end of her rope, Kafka rushes to her defense! But what is the humanoid kaiju’s goal?

Kaiju No. 8 volume 3 features story and art by Naoya Matsumoto.

Kafka manages to fight off a humanoid kaiju, rescuing Iharu and Reno. But before he can change back to his human form, Kafka is spotted by Defense Force officers, and the neutralization unit - led by none other than Vice-Captain Hoshina himself - is dispatched to dispose of him. Can Kafka withstand his superior officer’s attacks without revealing his true identity?!