Kouyou Ozaki

Kouyou’s personality: she’s a huge lesbian who holds herself and her love for women with grace and dignity but wastes no efforts hiding her dark nature. As a result of her failed escape from the Port Mafia, Kouyou is an extreme cynic, jaded against things like hope and love. Kouyou doesn't believe in the benefits of 'light' and claims that people born in 'darkness' are destined to never branch out for the light. With her eloquent speech, Kouyou often equates people to flowers. Some born in darkness, some destined to wilt. In her own words, "they [flowers] never have the chance to drop... if they remain mere buds", indicating she believes that no one will always remain pure and that that purity is a waste compared to how they are when they fall. As a result, Kouyou both detests and fears 'light', thinking there's nothing but disappointment and despair once exposed.

Around her comrades, Kouyou maintains her composure but has a much more laid back approach, and enjoys leisure time with her peers, such as the mafia's boss and her fellow executive. Towards others like Ace, however, she isn't the least bit subtle in her distrust and comes off very passive-aggressive.

For all her grace, Kouyou intense mindset leaves her prone to lashing out with cruel words and violent attacks - nothing out of the ordinary for a mafioso. Ruthless and brutal, Kouyou seldom holds back in a battle, only doing so for Kyouka Izumi's sake, and she is not above attacking when her target isn't looking.

After their hostility lowers, Kouyou extends some of her humor towards Atsushi Nakajima, but only once thus far, making a joke about how Osamu Dazai got information and cooperation out of her.

Kouyou mentored Kyouka, consequentially being the cause of Kyouka's extreme fear of change when she first joins the Armed Detective Agency. For some time, Kouyou drilled a dreary, hopeless mindset into Kyouka to ensure she would never leave the mafia. She goes as far as to lie by telling Kyōka she's directly responsible for her own parents' murders, poisoning Kyouka's mind.

Claiming this to be only for Kyouka's well-being, Kouyou projects her frustrations with life onto Kyouka. It takes Dazai's input for Kōyō to finally stop obsessing over Kyouka's defection and let the girl grow and think for herself. Nonetheless, Kouyou's attachment to Kyouka drives her to intercept a Special Division for Unusual Powers armed transport vehicle – leaking the true events of Kyouka's past to the girl – and later makes a point of never physically harming Kyouka during the Cannibalism operation. This careful mindset extends somewhat to other detectives, however, Kouyou only states that she dislikes the thought of harming Kyouka's friends.

Far from fearless, even Kouyou panics at the possibility of suffering through Dazai's infamous torture methods.

Kouyou likes wine, Kyouka Izumi, golden tempura, flowers, Chuuya, women, and hates love and hope