Male 171cm Mid to late 20s (estimated) Vice-Captain of the Defense Force's Third Division. A member of the Hoshina family, a clan of kaiju slayers dating back to the Muromachi period. He is 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 for firearms and thus uses swords as his main weapon. In combat, he utilizes Hoshina-style subjugation techniques. While he falls behind Ashiro Mina in dealing with giant kaiju, he is superior in subjugating medium and small kaiju. He possesses enough combat power to go toe-to-toe with the Daikaiju, Kaiju No. 10. Kafka describes his speed as being beyond human movement. He is generally relaxed, cheerful, and playful, but becomes extremely serious during missions. Kafka also notes that while he pretends to be strict, he is kinder than anyone else. He strongly dislikes his older brother, Hoshina Soichiro. He speaks in a Kansai dialect. Likes: Mont Blanc, coffee, simple people He uses formal language 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 join, she passed and rose to the rank of Captain through sheer skill. She appears cold and rigid but is a kind and warm person. She is the type to look after others in a subtle 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 he is a typical otaku whose room is a mess of trash, games, and plastic models. He is a flawed individual who prostrates himself before his subordinate Kikoru to borrow money after spending it all on YAMAZON, and he often skips meetings or ignores summons. However, his skills as a Captain are the real deal, and his overwhelming power makes up for all these flaws. During missions, he undergoes a 180-degree change, becoming 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, his potential and growth rate surpass hers. Even Vice-Captain Hoshina Soshiro acknowledges that he has the potential to grow to Captain level. He is decisive and has a strong sense of responsibility, valuing his comrades above all else. He originally had a 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 the former Captain of the Second Division, Shinomiya Hikari. She is called the greatest talent in history, having skipped grades to graduate at the top of her class from the California Subjugation University at age 16. She is basically 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 a Defense Force officer and Kaiju No. 8. As a human, 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. Current Captain of the Sixth Division. He is a central figure in the Western Division, often said to be to the West what Narumi Gen is to the East. He is the older brother of Third Division Vice-Captain Hoshina Soshiro by five years. Regarded as the perfected form of the Hoshina family and the next head of the clan, he has been a source of hidden comparison for his younger brother since childhood. Perhaps as a reaction to his teasing when they were young, they have lost contact as 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