Tsumugi Kotobuki

Japanese Name 琴吹 紬
Romaji Name Kotobuki Tsumugi
Nicknames Mugi
Series K-On!
Age 16-18
Weight 53kg
Height 157cm
Date of Birth July 2
Blood Type O

Tsumugi Kotobuki is a fictional character from the anime and manga series K-On! She is one of the main characters in the series and is known for her gentle and sweet personality. Tsumugi, often called “Mugi” by her friends, is the keyboardist of the light music club called Ho-kago Tea Time.

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Tsumugi is portrayed as a wealthy girl from a privileged background. Despite her privileged upbringing, she has a down-to-earth and easy-going nature. She finds joy in participating in “normal” activities and is fascinated by the experiences of her friends. Tsumugi is known for her kindness and generosity, often bringing candy and sweets to share with her clubmates. She is also shown to have a rebellious streak and occasionally displays childish enthusiasm. Tsumugi is often entranced by the interactions between her female friends and sometimes imagines romantic scenarios in her head.


Tsumugi comes from a wealthy family and is the daughter of a company president. Her family owns several villas in different parts of Japan and one in Finland. She has been playing the piano since the age of four and is considered a child prodigy. Tsumugi wanted to join the choir club, but ended up joining the light music club after being encouraged by her friends Mio and Ritsu. She is home-schooled and has had limited contact with the outside world until joining the Light Music Club.


Tsumugi has long, pale blonde hair, blue eyes, and unusually large eyebrows that run in her family. She has a fair complexion, which sets her apart from the other characters in the series. Although she spends little time in the sun, she does not get sunburned. Tsumugi is often seen wearing elegant and high society lady styles such as skirts and one-piece dresses, reflecting her refined upbringing.


Tsumugi is an accomplished musician and plays the Korg Triton Extreme 76-key keyboard in the Light Music Club. She can also be seen playing the Korg RK-100 Keytar in the credits of the first season. Having started playing the piano at a young age, she has won several piano competitions and is considered a child prodigy. Tsumugi’s musical talent and experience enrich the sound of Ho-kago Tea Time.


Tsumugi Kotobuki is a character created by Kakifly for the manga series “K-On!”. The series was later made into an anime. Tsumugi’s character traits and background were developed by the creator to add diversity and contrast to the group of main characters in the series. Her wealthy upbringing and musical talent contribute to the dynamics and interactions within the light music club.

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Tsumugi Kotobuki – FAQ

Who is Tsumugi Kotobuki?

Tsumugi Kotobuki is a fictional character from the anime and manga series “K-On! She is one of the main characters and is known for her sweet and gentle personality.

What instrument does Tsumugi Kotobuki play in K-On!

Tsumugi Kotobuki plays the keyboard in the light music club in the series. Her skills on the keyboard contribute to the band’s sound and performances.

What is Tsumugi Kotobuki’s personality like?

Tsumugi Kotobuki is portrayed as kindhearted, polite, and wealthy. She comes from a privileged background and often brings a sense of class and elegance to the group. Tsumugi is also known for her love of tea and sweets.

What is Tsumugi Kotobuki’s role in the band?

Tsumugi Kotobuki is the band’s keyboardist and backing vocalist. Her keyboard skills provide a melodic foundation for the music, and she harmonizes with the other band members during performances.

What are Tsumugi Kotobuki’s hobbies?

Tsumugi Kotobuki enjoys various hobbies, including playing the keyboard, cooking, and collecting tea sets. She is also interested in trying new things and often brings different kinds of tea and snacks to share with her friends.

How does Tsumugi Kotobuki contribute to the overall group dynamic?

Tsumugi Kotobuki brings a sense of warmth, positivity, and stability to the group. Her gentle nature and willingness to help others create a harmonious atmosphere within the group. In addition, her wealth and resources often provide the group with opportunities and comforts.