Keiko Izuna

Keiko Izuna (飯綱 恵子,) is a member of the Port Mafia, acting as one of Black Lizard's commanders. She also owns the ability "Forest's Soul" also known as "Asiza".

Appearance
Keiko is a small girl with irregularly trimmed green short hair and messy bangs split to the left, as well as green lifeless eyes. She has teardrops of crimson make-up on both sides of her cheeks. She wears the traditional clothes of a Japanese shrine maiden, with fuchsia pink boots and a red headband.

Personality
Keiko has a quiet and docile demeanor, and she is frequently observed doing as she is instructed. Her "father" is known to have a really excellent relationship with her. While she is often quiet, she has proven that when she is around Dazai and, she becomes more outspoken and sharp-tongued. She's also shown to be calm and in control of her emotions. Despite her placid exterior, Keiko demonstrates during her battle that she has a harsh side and a horrible tendency of stretching out fights in order to toy with her victims. She is a calm, apathetic, and cynical individual. Along with her quiet personality, Keiko appears to always "conserve energy" and only puts forth effort when absolutely required, giving her the impression of being lethargic.

Keiko also doesn't talk much because of her attitude, and she rarely gets upset, though she does appear to be irritated frequently. Keiko is a person who rarely expresses her feelings. Ironically, her efforts to prevent squandering her energy result in her waste it even more. Though Keiko appears to be self-assured, she has a propensity of doubting her own skills and abilities when she feels inadequate. Despite this, Keiko has an inner strength and resolve, as evidenced by her affirmation to herself that she is used to suffering pain and hardship, despite her vast inferiority to other high-ranking Port Mafia members.

Despite her harsh demeanor, she has a warm spot for Elise and Kyōka. She adores Elise and cherishes her as if she were her own sister, frequently playing with her and having tea parties with her. She also tries to be upbeat when she first meets Atsushi, cracking jokes about a variety of topics, most of which Atsushi doesn't understand. She adores playing the piano and performs The Symphony No. 5 in C minor, Op. 67 for Kōyō on a regular basis. According to Mori, she also has a sweet tooth.

Ability
Keiko's ability, Forest's Soul (魂林,) allows her to materialize a female sword-wielding dryad, more known as "Asiza". It is the same type of ability as Kyōka's. It can be controlled by her in her own will, but others can activate her ability using a certain phone number.

When the "verse" is said, Asiza becomes ecstatic and causes the plants and trees in their immediate vicinity (about 30-50 meters) to grow and attack the prey. Keiko labels her a "disgrace" to her and a "humiliation" to the Port Mafia because of its ability to manipulate greenery. Despite her manner toward Asiza, it remains devoted to her Ability User.

Skills

 * Sword Play: Keiko is skilled with a sword.
 * Master of Stealth: Keiko is very proficient in hiding, spying, and infiltration. Even her footsteps can be hardly heard when running.
 * Master Thrower: Keiko can throw multiple knives at once or in quick succession with great accuracy.

Background
Keiko was abandoned in the middle of the Great War by her parents when she was young (precisely two years-old), considering her ability as a threat. She was found crying in a pit by Yosano. Keiko was said to be brought to Mori and was admired by the soldiers in the Great War. After finding out that Keiko was an ability-wielder, Mori took care of her and claimed her as "his own" child. Yosano promised to take care of her until she grows into a fine woman, a promise Yosano couldn't attain and only realized it in the Post-Great War. Since then, Yosano made sure to not make a promise to her.

Quotes

 * (to Yosano Akiko) "I'm aware that you swore to yourself that you'd never guarantee me anything ever again. But please... Do your best to maintain Kyōka unharmed. Protect Kyōka and never let her descend into the abyss of darkness evermore."

Etymology

 * The name Keiko means "blessing, grace, fortunate" (恵) (kei) and "child" (子) (ko), which literally means "lucky child " altogether.
 * Keiko's surname, Izuna, is adapted from Mount Iizuna (飯縄山, Iizuna-yama), also known as Mount Izuna (飯綱山, Izuna-yama), that is a mountain located ten kilometers north-northwest of the heart of Nagano, Nagano Prefecture, Japan.
 * Yosano was the one who named her when she first met her, therefore Izuna Keiko is a revised form of Yosano Akiko. It also has a similar sound to the names Izumi Kyōka and Ozaki Kōyō.

Trivia

 * Just like Kunikida, she has a book of ideals. The difference is that Keiko does not "do what must be done", as that is the purpose of an ideal.
 * She plays the violin and piano.
 * She is Paul Verlaine's pupil.
 * Her birthday is the International Day of Forests, signifying to her Dryad Ability.
 * When she attempted to smile for the first time, as suggested by Dazai, it turned out as a smirk and she disliked it. From that day forth, she never tried to smile thinking it would scare off the Port Mafia members.
 * She has a habit of pulling her bangs when in deep thought.
 * Keiko has multiple kinds of bad habits:
 * She bites her fingers and let it bleed.
 * She makes Kajii help her on blowing up several houses or apartments of a person she hates lives in.
 * She is secretly a slacker and often finishes her assigned works without effort and report.
 * She likes watching smoke, a habit that  and Kōyō isn't fond of.
 * She mixes different types of foods out of curiousity (eg. sake and ketchup) and makes, Tachihara or anybody who's near her to taste it. She saves her ingredients in the counter of cooking condiments, making most of the seasonings in the Port Mafia mixed up.
 * Because of this habit, she got restricted in the Kitchen and is only allowed to enter if Hirotsu, Gin or Higuchi are with her.
 * According to the guidebook:
 * Stress gives her fever.
 * She considers Dazai an animal, something Fukuzawa had said to be disrespectful.
 * She does not like nor dislike herbal tea, but often drinks it.
 * She hangs out with Kajii most of the time if Elise is busy.
 * Because of her habit of hanging out with Kajii, she became fond of science.