Defense Force[]
Mina, being the Captain of the Third Division of the Defense Force, is seen as a prodigy by the public and as a model and worthy leader by every member of the Force below her, gaining the trust of all her subordinates, who follow her orders without question.
Third Division[]
Soshiro Hoshina[]
Mina was the only one to ever believe in the fact that Soshiro's swordsman ability could find a place in the Force. When meeting him, she asked him to "carve the path for her" whenever she would shoot kaiju down, thus making him her Vice-Captain and having him at her side whenever she needs. She holds a great sense of gratitude and trust towards her Vice, with the feeling being mutual, despite biting at each other sometimes.
Kafka Hibino[]
Mina's childhood friend, Kafka once made the promise to stand at her side to eliminate every kaiju on their path. Years later, Mina was initially irritated at the fact that Kafka didn't keep his promise but when she saw him finally becoming a de facto Force member, Mina was genuinely happy to see her friend in her Division. Kafka himself still sees Mina as his goal to reach and sees her as someone to emulate.
Their bond appears to be the only thing strong enough to shake Mina's self-confidence and professionality, since she was utterly shocked to find out that Kafka was actually Kaiju No. 8, and couldn't help but feel uneasy when securing him. Even after his capture, Mina assured Kafka that she'd do anything possible to prevent Kafka from being disposed of, and when asked if he could still hope to stand at her side one day she replied that she'd be waiting for him, despite his kaiju form.
Kikoru Shinomiya[]
Ever since hearing about her at the Selection Exam, Mina grew high expectations on Kikoru and later thanked Kafka and Leno Ichikawa for rescuing her during the incident. Sometime later, Mina had a meeting with Kikoru and Soshiro, showing the high expectations she has on Kikoru by telling her about her wish to make Kikoru a pillar in the Force and giving her her own personal weapon.
Others[]
Bakko[]
Bakko is Mina's pet tiger and her feline companion. Apart from keeping him in her apartment, she brings Bakko with her on the battlefield to assist her and the Defense Force to neutralize kaiju. He seems to be very obedient and loyal to her owner and follows her order whenever she needs.