Kayoko Huang

is the Battalion Commander of Special Fire Force Company 6.

Appearance
Kayoko is a tall female with boyish short-black hair and light eyes. She dons the Special Fire Force jacket and metal-neck protection, with a cloak that reaches down to her waist. Instead of the Special Fire Force trousers, she wears black trousers and black high-heels. When in the 6th Company Barracks, she wears a white lab coat over darkly coloured shirt. Kayoko wears a surgical gown, gloves and mask when performing an operation.

Abilities
Kayoko is a Third Generation, who can use her Ignition Ability which takes the form of a caduceus to amplify the regeneration of the body by accelerating cell division. In doing so, she can cure diseases, heal wounds, treat diverse symptoms, and in the case of treating someone who is a Third Generation, can use their own flames to increase the time of regeneration and to eliminate their pain instantly.

Preacher Pursuit arc
Kayoko, alongside the other seven Battalion Commanders and Fire Officers of the Special Fire Force, attends a meeting with Raffles III, where Adolla Burst and the issues involving Spontaneous Human Combustion are discussed.

Netherworld arc
After defeating an Infernal in the streets of Tokyo, Kayoko returns to the Special Fire Fighting Defence Clinic 6, astonished to see that Special Fire Force Company 8 have arrived at her office asking for help with recovering Shinra, as he had been stabbed through the chest by Haumea. Kayako then tends to the boy's wounds using her Ignition Ability. The operation is a success and Shinra wakes up three days later, matching with Kayoko's predictions.

Post-Operation Nether Investigation arc
Kayoko appears in this arc.