Male 171cm Mid to late 20s (estimated) Vice-Captain of the Defense Force's Third Division. A member of the Hoshina family, a lineage of kaiju slayers dating back to the Muromachi period. He is also the younger brother of Hoshina Soichiro, Captain of the Sixth Division in the Western Division. He uses polite speech with his superiors (Captains). In the Defense Force, which primarily uses long-range weapons, he has a low released power with firearms, so he uses blades as his primary weapon. In combat, he utilizes Hoshina-style Subjugation Arts. While he generally lags behind Ashiro Mina against giant kaiju, he is superior in subjugating medium and small kaiju, possessing enough combat power to go toe-to-toe with the Daikaiju, Kaiju No. 10. He displays such incredible speed that Kafka describes it as not being the movement of a human. He is generally easygoing, cheerful, and playful, but becomes extremely serious during missions. Kafka also thinks that while he pretends to be strict, he is kinder than anyone else. He strongly dislikes his older brother, Hoshina Soichiro. He uses a Kansai dialect, as he is from the Kansai region. Likes: Mont Blanc, coffee, simple people He uses polite speech with superiors like Ashiro Mina and Narumi Gen.

Female 169cm 27 years old Captain of the Defense Force's Third Division. Hibino Kafka's childhood friend. After their village was destroyed by a kaiju when they were young, she vowed to become a Defense Force officer with Kafka. While Kafka failed to become one, she passed and rose to the rank of Captain through sheer skill. She appears cold and rigid, but she is a kind and warm person. The type to look after others in a nonchalant way. Likes: Dried squid, baths

Male 175cm Mid to late 20s (estimated) Captain of the First Division, known as Japan's strongest. He usually lives in the Captain's office, but due to his typical otaku nature, the room is a mess of trash, and he leads a pathetic lifestyle filled with his hobbies of gaming and plastic models. He is a deeply flawed individual who prostrates himself before his subordinate Kikoru to borrow money when he runs out after bulk-buying on YAMAZON, and he often skips meetings by ignoring Defense Force summons. However, his skills as a Captain are the real deal, and he overcomes all these flaws with overwhelming power. During missions, his personality flips 180 degrees to become cold-headed and dedicated, giving specific orders to his subordinates. He has very large hands and feet. Likes: Games, searching his own name on the internet

Male 174cm 18 years old A member of the Third Division. While not as strong as his peer Shinomiya Kikoru, he is an officer whose potential and growth rate exceed hers. Even Vice-Captain Hoshina Soshiro acknowledges his potential to grow to Captain-level. He is fundamentally decisive and has a strong sense of responsibility, valuing his comrades above all else. Originally, he had a somewhat cynical personality and a blunt way of speaking, but he softened significantly after being saved by Kafka multiple times and coming to admire him as a life-saver and a hero.

Female 157cm 17 years old A member of the Third Division. The daughter of Defense Force Director General Shinomiya Isao and former Second Division Captain Shinomiya Hikari. She is called the greatest talent in history, having skipped grades to graduate as the youngest valedictorian from a California subjugation university at age 16. She is fundamentally arrogant and prideful, but also possesses a kind heart that values her comrades. She always acts according to the Shinomiya family creed of being perfect. Likes: Black tea, large dogs

Male 181cm 32 years old A member of the Third Division. Childhood friend of Third Division Captain Ashiro Mina. After a small kaiju entered his body, he gained the ability to transform into a humanoid kaiju, becoming both a Defense Force officer and Kaiju No. 8. In human form, he is closer to non-combat personnel with a suit release rate of only 1%, but when he transforms into Kaiju No. 8, he becomes a historic Daikaiju with an estimated Fortitude of 9.8. Likes: Hamburg steak, alcohol, curry

Male 176cm Late 20s to early 30s (estimated) He has long white braided hair and uses a sword. The current Captain of the Sixth Division. He is a pivotal figure in the Western Division, said to be the Western equivalent of Narumi Gen in the East. He is the older brother of Eastern Division Third Division Vice-Captain Hoshina Soshiro by five years. Regarded as the perfected version of the Hoshina family and the next head of the house, he has been an object of secret comparison for his younger brother since childhood. Perhaps as a reaction to his teasing when they were young, they have lost contact now that they are adults. He likes his younger brother Soshiro very much, but it seems the feeling isn't mutual. He speaks in a Kansai dialect. Likes: Mont Blanc, naps