To estimate Dandadan character ages, use Japan’s school system: match the character’s grade to a typical age range, then adjust by the April-March school year. Because classmates can be almost a year apart, it’s safest to write ages as ranges or “not confirmed.”
In this Dandadan character ages guide, most of the main high school cast is commonly listed around 16-17 as the story moves forward, while Seiko is an adult often estimated in the 50s-80s.
Aliens and yōkai are best labeled unknown/teen-equivalent/not applicable instead of forcing a number.
Explore Dandadan character ages with quick, accurate ranges and character notes, read the full guide now on HariManga.
How to estimate Dandadan character ages using Japan’s school system
To estimate Dandadan character ages, the easiest way is to use Japan’s school system. You match the character’s grade to a typical age range. Then you adjust by the time of year.
1) Check the school level
- Middle school (Junior High)
- High school
2) Match grade to an age range
- Junior High
- Year 1: 12-13
- Year 2: 13-14
- Year 3: 14-15
- High School
- Year 1: 15–16
- Year 2: 16-17
- Year 3: 17-18
3) Use the Japanese school year (April to March)
- April-June: students are often at the younger end.
- Jan-Mar: students are often at the older end.
4) Remember the cutoff rule
- Classmates can be almost one year apart.
- That’s why Dandadan character ages should be a range, not one number.
5) Only use clear clues from the story
- “First-year” or “second-year” talk.
- School events like a new term or exams.
If it’s not clear, write “not confirmed”.
6) Use safe wording
- “Estimated 15-16 based on school year.”
- “Exact age is not officially stated.”
Dandadan character ages: How old is Ayase, Momo, Seiko & others
This guide breaks down Dandadan character ages in a clear, spoiler-light way, so you can quickly see how old Ayase, Momo, Seiko, and others are (or why their ages aren’t officially stated).
It’s the easiest reference if you want a fast overview of the most talked-about Dandadan characters.
Momo Ayase
- Age (commonly listed): 16–17
- Category: High schooler (main cast)
- Notes: Exact birthday is not clearly stated on-screen; treat as an estimate.
Momo is a high school student, so most Dandadan character ages guides place her in the mid-teens.
Depending on the arc and school-year context, she is typically listed around 16-17.
Ken “Okarun” Takakura
- Age (commonly listed): 16-17
- Category: High schooler (main cast)
- Notes: Best written as a range unless the manga/anime states a specific birthday.
Okarun is in the same high school cohort as Momo, so he is also generally placed in the mid-teens.
Many listings put him around 16-17 as the story progresses.
Jin “Jiji” Enjoji
- Age (suggested by school year): 16-17
- Category: High schooler (main/supporting cast)
- Notes: Story context matters; “second-year” typically maps to 16-17 in Japan.
Jiji is a high school student in the same grade band as the core group, so his age is usually placed in the same teen range.
Some references suggest he is in a second-year class, which helps explain Dandadan character ages estimates that place him around 16-17.
Aira Shiratori
- Age (commonly listed): 16-7
- Category: High schooler (main/supporting cast)
- Notes: Keep as a range unless an official birthday is stated.
Aira is a Kami High student, so she is generally placed in the mid-teens like the rest of the school cast.
Several listings place her at 16-17.
Kinta Sakata
- Age (commonly listed): 16-17
- Category: High schooler
- Notes: Fits the main teen cohort; treat as an estimate.
Kinta is another high school student tied to the main group, so his age is typically listed in the same band in Dandadan character ages guides. Many references place him at 16-17.
Rin Sawaki (Class Rep)
- Age (commonly listed): 16-17
- Category: High schooler
- Notes: Often associated with a “second-year class” implication.
Rin is a high school class representative, so she is usually listed in the same teen range as the main students. Many listings put her at 1617.
Miko
- Age: Not officially stated (teen student)
- Category: High school student / friend group
- Notes: Best labeled “teen” unless a school year is confirmed.
Miko is one of Momo’s best friends at school, so in Dandadan character ages discussions she’s also treated as a teenager based on context.
Her exact age is not commonly stated in official profiles, so it should stay unknown (teen student).
Muko (Kei in the manga)
- Age (suggested by school year): 16-17
- Category: High school student / friend group
Wikipedia - Notes: “Second-year” is the key clue used for the estimate.
Muko is another of Momo’s best friends and is treated as a high school student in the same circle.
Some references note she is in a second-year class, suggesting 16-17.
Unji Zuma (Zuma)
- Age (suggested by grade): 15-16
- Category: High schooler (supporting)
- Notes: Use 15–16 unless later material clearly moves him up a year.
Zuma is a high school student, but tied to a different school context in some references, so Dandadan character ages guides often handle him separately. Notes that place him in grade 10 typically map to 15-16.
Seiko Ayase (Grandma)
- Age: Not officially confirmed (adult)
- Common estimate range: 50s-80s
- Category: Adult / spirit medium
- Notes: Best phrasing: “adult; exact age unknown.”
Seiko is clearly an adult and Momo’s grandmother, but her exact age is treated as intentionally unclear.
Many summaries describe her as somewhere in the 50s–80s (estimate, not a canon number).
Queen Sensei (School Nurse)
- Age: Not stated (adult)
- Category: School staff / nurse
- Notes: Do not guess a number; “adult” is the accurate label.
Queen Sensei is a school nurse and an adult character, so Dandadan character ages lists should not give her a teen range. Her exact age is not commonly stated.
Manjiro
- Age (listed): 36
- Category: Adult / spirit medium
- Notes: This is one of the rare explicit ages you can cite.
Manjiro is an adult spirit medium associated with Seiko’s world and is one of the few characters with a clearly listed number. Some references list him as 36.
Vamola (Bamora)
- Age: Unknown in human years (teen-equivalent)
- Common “human-like” listing: 16-17 (estimate)
- Category: Alien ally
- Notes: Best wording: “appears teenage; species ages differently.”
Vamola is an alien, so in Dandadan character ages guides her age does not translate cleanly into human years.
Most guides label her as teen-equivalent, and some lists place her around 16-17 by appearance and maturity.
Turbo Granny
- Age: Unknown / not applicable
- Category: Yōkai/spirit
- Notes: Avoid assigning a number without canon confirmation.
Turbo Granny is a supernatural being, so a human age range does not apply. Her age should be listed as unknown/not applicable.
Evil Eye
- Age: Unknown / not applicable
- Category: Spirit / possession threat
- Notes: Treat as a supernatural entity, not a human age.
Evil Eye is a spirit entity tied to major supernatural events, so a normal “teen age” label is not reliable. The safest entry is unknown/not applicable.
Reiko Kashima
- Age: Unknown
- Category: Yōkai/spirit
- Notes: Keep as “unknown” unless the manga provides an origin age.
Reiko Kashima is a yōkai, so her age is not treated as a standard human number. Most profiles list her age as unknown.
Acrobatic Silky
- Age: Unknown / not applicable
- Category: Yōkai/spirit
- Notes: Any numeric age would be speculation without canon text.
Acrobatic Silky is a yōkai/spirit character and is not presented with a clear numeric age. For Dandadan character ages, she should be labeled unknown/not applicable.
Serpo Aliens (Species)
- Age: Unknown / not comparable
- Category: Alien species (antagonists/supporting)
- Notes: List by role and arc involvement, not by numbers.
The Serpo are an alien race, so individual “ages” are not typically listed like human characters.
Use unknown/not comparable unless a specific Serpo individual has stated data.
Rokuro Serpo
- Age: Not stated
- Category: Serpo individual / supporting
- Notes: Avoid guessing a human age conversion.
Rokuro is a specific Serpo individual who becomes a notable supporting character, but his human-equivalent age is not clearly stated. The safe label is unknown.
Mr. Mantis Shrimp
- Age: Not stated (adult-coded)
- Category: Alien/creature character
- Notes: Use descriptive age language (“middle-aged appearance”) instead of numbers.
Mr. Mantis Shrimp is presented with a human disguise that resembles a middle-aged man, but no numeric age is confirmed. The safest label is unknown (adult-coded).
Count Saint-Germain
- Age: Not stated (adult; possibly ageless by implication)
- Category: Human-like mystery figure
- Notes: Keep wording cautious unless the manga states a concrete age.
Count Saint-Germain is framed as an adult figure, and in Dandadan character ages discussions some commentary connects him to the historical “St. Germain” legend associated with not aging.
The series does not provide a reliable numeric age, so the best label is unknown/possibly ageless.
FAQs
If you’re searching for Dandadan character ages, this FAQ section gives quick, accurate ranges based on school context and what the series actually confirms.
It’s the safest way to summarize ages without inventing “canon” numbers.
How old is Momo Ayase in Dandadan?
Momo is usually estimated to be around 16-17 years old because she’s portrayed as a high school student, but the series does not always state an official canon age.
How old is Okarun in Dandadan?
Okarun is commonly placed in the 15-17 range, since different sources infer his age from school year and timeline clues; the most accurate approach is to use a range.
Are Momo and Okarun the same age?
They are generally treated as roughly the same high school age range, with no meaningful gap implied in the story.
Are Momo and Okarun the same age?
Seiko is an adult, and the story highlights how young she looks despite being Momo’s grandmother; her exact age is not officially confirmed.
Are Momo and Okarun the same age?
Hai nhân vật thường được xem là xấp xỉ cùng nhóm tuổi trung học (chênh lệch không đáng kể), nên khi viết SEO nên dùng “around the same age range”.
How old is Seiko Ayase?
Seiko là nhân vật trưởng thành và truyện nhấn mạnh ngoại hình trẻ so với vai trò “bà” của Momo; tuổi cụ thể không được chốt rõ trong mô tả phổ biến.
Does Dandadan reveal the exact ages/birthdays of every character?
No. Many ages can only be estimated from school context, and several characters – especially supernatural beings – are best listed as “unknown/not officially stated.”
In the end, Dandadan character ages are best understood as smart estimates based on school context, since the series rarely confirms exact birthdays for every character.
Using age ranges keeps the info accurate while still helping you follow how the cast grows and changes across each arc.
For more quick character guides and updates, read along with HariManga.
