Mitsuko Yokoyama

Author
✒️Edit
Mitsuko Yokoyama
Chat
Gender: Female
Japanese Name: 横山 みつ子(よこやま みつこ)
Chinese Name: 橫山光子
Korean name: 요코야마 미츠코
I this character

🎙️ Anime Voice Actor

Edit
Mikako Takahashi
Mikako Takahashi
Japanese(Anime、Voice Actor)

🎬 Appearing Anime

Edit
Prison School
Prison School
Release date: July 11, 2015

Character Setting

Edit

Mitsuko Yokoyama is a second-year student at Private Hachimitsu Academy and serves as the secretary of the Official Student Council.

She is also the younger cousin of Anzu Yokoyama and is voiced by Mikako Takahashi in the OVA.

While specific physical measurements are not provided, Mitsuko is typically depicted with a gentle and unassuming appearance befitting her mild-mannered personality.

Unlike her aggressive Official Student Council colleagues Kate Takenomiya and Risa Bettō, Mitsuko is a kind-hearted and moderate figure.

She refrains from the bullying tactics aimed at the Underground Student Council and interacts normally with Mari Kurihara and her friends, making her one of the more approachable members of the council.

Her gentle nature is, however, accompanied by a legendary clumsiness.

She has earned the infamous nickname "Pythagoras Clumsy Girl" for her ability to execute accidents that transcend normal human understanding.

Mitsuko is a devoted fan of the Romance of the Three Kingdoms.

Her passion for this historical epic allows her to connect and have deep discussions with Takehito Morokuzu, making them close friends within this niche interest.

Her name is even modeled after the famous manga artist Mitsuteru Yokoyama, known for his own *Romance of the Three Kingdoms* adaptation.

Behind her demure exterior, Mitsuko is also an enthusiastic fujoshi who indulges in creating Boys' Love (BL) manga.

Due to a humorous misunderstanding, she became convinced that Takehito Morokuzu and Jōji Nezu are secretly lovers.

Under the pen name "Anmitsu," she began writing and illustrating BL comics based on her imagined romance between the two.

This hobby created a rift with Takehito, who absolutely cannot accept the BL genre, causing him to distance himself from her.

On the other hand, Jōji Nezu found himself strangely attracted to her storytelling and artwork.

This led to the two of them bonding enthusiastically, with Jōji acting as her dedicated editor, and their creative partnership flourished.

(View edit history)

(Last edited time: May 14, 2026, 11:46 p.m.)

💬 Community Discussion

Talk about this anime with people who actually care.

Source: ()
💬 Reply 🗑 Delete
Anibase.Net
The world's largest anime community, which has already been visited by over 100 million people.

Share

Other Characters

View All
Meiko Shiraki
Meiko Shiraki
Gender: Female
Voice Actor: Sayuri Furukawa、Shizuka Itou
Hana Midorikawa
Hana Midorikawa
Gender: Female
Voice Actor: Kana Hanazawa
Mari Kurihara
Mari Kurihara
Gender: Female
Voice Actor: Sayaka Oohara
Chiyo Kurihara
Chiyo Kurihara
Gender: Female
Birthday: July 7
Voice Actor: Chinami Hashimoto
Reiji Andō
Reiji Andō
Gender: Male
Voice Actor: Kazuyuki Okitsu
Kate Takenomiya
Kate Takenomiya
Gender: Female
Voice Actor: Ami Koshimizu
View All