Kotoha Isone

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Kotoha Isone
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Age: 16
Birthday: September 3
Zodiac: Virgo
Gender: Female
Height: 165cm
Japanese Name: 五十音 ことは(いそね ことは)
Chinese Name: 五十音言葉
Korean name: 이소네 코토하
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🎙️ Anime Voice Actor

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Miyuki Sawashiro
Miyuki Sawashiro
Japanese(Anime、Voice Actor)

🎬 Appearing Anime

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Yozakura Quartet
Yozakura Quartet
Release date: Oct. 6, 2013

Character Setting

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Kotoha Isone is a 16-year-old girl who works part-time and serves as the assistant director at the Hiizumi Life Counseling Office. She is known for her love of vegetable dishes, her brown eyes and hair, and always wears her hair tied up. Kotoha is easily recognized by her big glasses and her curvy figure, though her glasses are mostly for show—she also uses contact lenses because her eyesight isn't perfect. She is a "fallen" half-yōkai and has the unique power to make words become real things, known as a "kotodama" user. Kotoha loves traveling and reading, especially fairy tales, and has shelves full of storybooks. Her personality is straightforward and generous, and she doesn't worry much about things she can't control. Kotoha is tough in battle and often combines her strong body with her kotodama skills, even bringing out many weapons when needed. She is a military fan and famous for being very loud and energetic. Important story points talk about a past incident where she lost control of her powers and also her key role in future events involving half-yōkai. Kotoha actually didn't exist until the last minute; she was created because the editor wanted a "girl with glasses," and now she's the author's favorite.

Kotoha Isone is 16 years old and was born on September 3rd.

She stands 166 cm tall.

She has brown hair and eyes and usually keeps her hair tied up.

She wears large glasses, but they are mostly for appearance.

Her real eyesight is not good, so she sometimes uses contact lenses.

She has a curvy body shape and is easy to notice in a crowd.

Kotoha has a cheerful and generous nature.

She is straightforward and doesn't like to dwell on things she can’t change, calling them simply “bad luck.”

She is both mature and kind, making her easy to get along with.

Kotoha is not bothered much by her mistakes, but when reminded of past incidents, she can get upset and lose her shine a little.

Kotoha is a "fallen" half-yōkai, meaning she struggled with her powers in the past.

She started coming to the Hiizumi Life Counseling Office just to use their basement library.

One day, on her way home, she “fell” and lost control, causing a lot of damage.

Zakuro Kurumaki once said that Kotoha “smells the most of blood.”

Even though she pretends she is fine, bad memories of this day can shake her.

Despite all this, she became the assistant director and works alongside Akina Hiizumi.

She believes half-yōkai are the key to the event called the “Seven Towns Blooming.”

Kotoha is a kotodama user, able to turn spoken words into real things.

Easy things need just a simple word, but complex items require longer descriptions.

She often “registers” items, tasting them with her tongue to memorize them, so she can create them later with shortcut words.

She has added many German military weapons to her “dictionary” and loves military items.

During battles, she combines her physical abilities and kotodama powers.

She can even materialize many firearms at once, earning her the nickname “true gun-crazy” from Akina Hiizumi.

Reading boosts her kotodama abilities, making fairy tales especially useful since she loves them.

She can “summon” things by reading from a book, though it’s tiring for her.

Yelling kotodama through the phone allows her to summon things at the other end, but overusing her power causes letters to appear in the air and makes her lose her voice, so she eats throat candy before fighting.

Kotoha is best partners—and rivals—with Ao Nanami, who is a satori.

She often borrows rare books from V Lila F and has a special card letting her access the Elder’s Library at any time.

She is close to Akina Hiizumi and the other office members, fighting and working together.

Kotoha is a big fan of travel and books.

Her bookcase at home is packed with fairy tales.

She once visited Germany to go to the Koblenz Defense Technology Museum and was so excited that she summoned a railway gun without a shortcut.

Her love for fairy tales helps strengthen her imagination, making her kotodama powers stronger.

She carries throat candy to protect her voice during frequent power use.

Kotoha did not exist until the last minute before the series started; she was created when someone said, “You need a girl with glasses,” and now she is the author’s favorite character.

Working at Hiizumi Life Counseling Office

Kotoha works part-time and helps as the assistant director.

She joined the team mainly to use the underground library but became an important member.

The Day She Fell

One day, after visiting the office, Kotoha lost control of her powers on her way home.

She became a "fallen" half-yōkai and caused a lot of damage in the process.

Since then, some people, like Zakuro Kurumaki, have noticed she “smells of blood” the most.

Using Powers in Battle

Kotoha takes part in fights with Hime Yarizakura and others from the office.

Her skills make her a match for Hime, and she’s said to be even stronger than Hime when fighting against many enemies at once.

She often uses her kotodama powers with fast, creative words—sometimes summoning lots of weapons.

The Key to “Seven Towns Blooming”

In coming events, Kotoha believes half-yōkai like her will be crucial to stopping a big incident called the “Seven Towns Blooming.”

Kotoha’s unique history, powerful kotodama abilities, and love for books and travel make her one of the most colorful and interesting members of the Hiizumi Life Counseling Office.

Though her past is troubled, she tries to move forward with energy and a big heart.

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(Last edited time: May 19, 2026, 1:26 p.m.)

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