In a world where Kaijus threaten humanity, Kafka Hibino is always there to scrape their muddy remains off the street. Because one thing Kafka is definitely not is a hero. A bit too old and a bit too weak, he still clings to his dream of finally being able to join the Japan Defense Force. His childhood friend Mina has already done it, and it would be a shame if he couldn't someday blast away Kaijus himself.