Dandadan Character Ages

Dandadan character ages at a glance

Momo Ayase: 16-17 (second-year high school student)
Ken "Okarun" Takakura: 16-17 (Momo's classmate)
Aira Shiratori: 16-17 (second-year student at Kami High)
Jin "Jiji" Enjoji: 16-17 (Momo's childhood friend, same age group)
Seiko Ayase: never stated (Momo's grandmother, a veteran medium)
Vamola (Bamora): never stated (alien, age not given)

How we know the ages without a birthday

Japanese schools run by grade, and students in the same grade are born within the same twelve-month window. Second-year high school students turn 16 or 17 during that year, depending on when their birthday falls. Since Momo and Okarun share a class and Aira attends the same school year, they sit in the same bracket.

You will see some sites say 15-16. That range comes from guessing the characters are first-years, but the series places them in their second year, so 16-17 is the safer answer.

Momo Ayase

Momo is the female lead, a medium's granddaughter who awakens psychic power after her encounter with aliens. She is a second-year student, putting her at 16 or 17. No chapter or episode gives her birthday.

Ken "Okarun" Takakura

Okarun is the occult-obsessed classmate who takes on a curse after meeting Turbo Granny. He is in Momo's class, so he is the same age: 16 or 17.

Aira Shiratori

Aira starts as the popular girl who clashes with Momo and becomes one of the team's closest allies. She is human and attends the same school year, so she is also 16 or 17. Her fighting ability and composure make her seem older, but nothing in the story says she is.

Jin "Jiji" Enjoji

Jiji is Momo's childhood friend who returns during the Serpo arc and ends up hosting an evil spirit. Being a childhood friend of the same age, he falls in the same 16-17 range.

Seiko Ayase

Momo's grandmother is the hardest to pin down. Her age is never given, and her youthful look is part of the joke. All we can say is that she is old enough to be a grandmother with decades of experience as a medium.

Vamola (Bamora)

Vamola is an alien from the Serpo storyline. The series does not give an age for her, and comparing alien lifespans to human years has no basis in the story.

Why the ages matter to the story

Dandadan works because the occult chaos sits on top of an ordinary teenage setting: crushes, class rivalries, awkward friendships. Keeping the cast at second-year age keeps that balance. It also explains why Momo and Okarun's relationship moves at a believable pace for teenagers.

FAQ

How old is Momo in Dandadan?
16 or 17. She is a second-year high school student, and her exact age is not stated.

How old is Okarun in Dandadan?
16 or 17, the same as Momo, since they share a class.

How old is Aira in Dandadan?
16 or 17. She is in the same school year.

How old is Seiko in Dandadan?
It has never been revealed.

Does Dandadan ever confirm exact ages?
Not for the main cast. School year is the only reliable indicator.