Main character
Koyomi Mizuhara水原暦
- appearances
- 3
- appearances
- main roles
- 3
- main roles

Koyomi Mizuhara at a glance
Koyomi Mizuhara is a main character in Azumanga Daioh. She is voiced by Rie Tanaka in Japanese and by Nancy Novotny in the English dub.
Also known as Yomi.
Koyomi Mizuhara: quick facts
- Anime
- Azumanga Daioh
- Role
- Main character
- Gender
- Female
- Also known as
- Yomi
- First appearance
- Azumanga Web Daioh (2000)
- Latest appearance
- Azumanga Daioh (2002)
- Japanese name
- 水原暦
- Japanese voice
Rie Tanaka- English voice
Nancy Novotny
Who is Koyomi Mizuhara?
Koyomi Mizuhara (水原 暦, Mizuhara Koyomi?), commonly known as Yomi, is a grade-school friend and general antithesis of Tomo. She is the voice of reason of the series, carrying herself as the most mature and serious of the group. Though smart and athletic, she is constantly dissatisfied with herself due to her weight and is always trying various diets in an effort to become thinner. She can never seem to stick to these diets however, as she finds herself constantly tempted by her favorite foods.
Biography excerpt via Kitsu.
Koyomi Mizuhara in numbers
- Favourites on AniList
- 321
- fans who marked them a favourite
- Rank in Azumanga Daioh
- #6
- of 20 characters, by favourites
- Appearances
- 3
- 3 as a main character
- On screen
- 2000–2002
- 3 years
Most-loved characters in Azumanga Daioh
AniList favourites
- Ayumu Kasuga3,576
- Sakaki1,281
- Chiyo Mihama809
- Tomo Takino565
- Yukari Tanizaki472
- Koyomi Mizuhara320
- Kagura311
- Chiyochichi257
Show as table
| Item | Favourites |
|---|---|
| Ayumu Kasuga | 3,576 |
| Sakaki | 1,281 |
| Chiyo Mihama | 809 |
| Tomo Takino | 565 |
| Yukari Tanizaki | 472 |
| Koyomi Mizuhara | 320 |
| Kagura | 311 |
| Chiyochichi | 257 |
Appearances by format
3 titles in total
- ONA1 · 33%
- Special1 · 33%
- TV Series1 · 33%
Appearances per year
New titles featuring them
Show as table
| Item | Titles |
|---|---|
| 2000 | 1 title |
| 2001 | 1 title |
| 2002 | 1 title |
Appearances
More characters from Azumanga Daioh
Koyomi Mizuhara FAQ
What anime is Koyomi Mizuhara from?
Koyomi Mizuhara is a main character in Azumanga Daioh and appears in 3 titles in total, including Azumanga Web Daioh and Azumanga Daioh: Gekijou Tanpen.
Who voices Koyomi Mizuhara?
Koyomi Mizuhara is voiced by Rie Tanaka in Japanese and by Nancy Novotny in the English dub.
What is Koyomi's full name?
Koyomi's full name is Koyomi Mizuhara (水原暦 in Japanese). Koyomi Mizuhara is also known as Yomi.
When did Koyomi Mizuhara first appear?
Koyomi Mizuhara first appeared in Azumanga Web Daioh (2000) and most recently appeared in Azumanga Daioh (2002).
What is Koyomi Mizuhara's Japanese name?
Koyomi Mizuhara is written 水原暦 in Japanese.
Where can I watch Koyomi Mizuhara?
Open the Azumanga Daioh page for licensed streaming links and the full episode list.














