**The world of manga and anime is constantly introducing us to captivating characters, but few have sparked as much intrigue and discussion as Seiko Ayase from the wildly popular series, *Dandadan*. With its unique blend of supernatural action, quirky humor, and memorable personalities, *Dandadan* has quickly captured the attention of fans worldwide. Amidst the alien encounters and spirit battles, one question frequently echoes through the fandom: what is the *Dandadan grandma's age*?** This seemingly simple query has become an ongoing gag and a central mystery, driven by Seiko's remarkably youthful appearance despite her role as a grandmother. Seiko Ayase, the grandmother of the series' main female protagonist, Momo Ayase, stands out not only for her bold personality and powerful spirit medium abilities but also for a visual paradox that keeps viewers and readers guessing. Despite her mature and confident demeanor, Seiko looks remarkably young, making many wonder about her true age and the secret behind her seemingly ageless looks. Let's dive deep into the enigma of Seiko Ayase and explore why her age remains one of *Dandadan*'s most delightful running gags. --- **Table of Contents** * [Who is Seiko Ayase? A Glimpse into Dandadan's Enigmatic Spirit Medium](#who-is-seiko-ayase-a-glimpse-into-dandadans-enigmatic-spirit-medium) * [Seiko Ayase: Personal Data & Biodata](#seiko-ayase-personal-data-biodata) * [The Enduring Mystery of the Dandadan Grandma's Age](#the-enduring-mystery-of-the-dandadan-grandmas-age) * [Why Does Seiko's Age Matter to Fans?](#why-does-seikos-age-matter-to-fans) * [Decoding Seiko Ayase's Youthful Appearance](#decoding-seiko-ayases-youthful-appearance) * [Seiko Ayase's Role Beyond Her Age: A Pillar of Support](#seiko-ayases-role-beyond-her-age-a-pillar-of-support) * [Seiko's Dynamic with Momo Ayase](#seikos-dynamic-with-momo-ayase) * [Dandadan's Success: More Than Just Age Mysteries](#dandadans-success-more-than-just-age-mysteries) * [The YMYL & E-E-A-T Connection in Fictional Character Analysis](#the-ymyl-e-e-a-t-connection-in-fictional-character-analysis) * [Speculation vs. Canon: Navigating Fan Theories](#speculation-vs-canon-navigating-fan-theories) * [The Enduring Appeal of the "Dandadan Grandma Age" Trope](#the-enduring-appeal-of-the-dandadan-grandma-age-trope) --- ## Who is Seiko Ayase? A Glimpse into Dandadan's Enigmatic Spirit Medium Seiko Ayase (綾あや瀬せ星せい子こ, Ayase Seiko?) is a major supporting character in the *Dandadan* manga series and a central figure in its upcoming 2024 anime adaptation. Known by her alias, Santa Dodoria (ドドリア三太, Dodoria Santa?), she is a renowned spirit medium and the grandmother of Momo Ayase, with whom she lives. While performing her duties, Seiko provides crucial support to Momo and her friends as they become entangled with spirits, aliens, and various supernatural phenomena. Seiko's personality is as distinct as her appearance. She possesses a phlegmatic demeanor, often appearing calm and composed even in the face of bizarre or dangerous situations. However, this calm exterior hides a highly uncouth manner of speech, which adds to her unique charm and often provides comedic relief. Despite her bluntness, Seiko is profoundly selfless and empathetic, consistently stepping up to help others in need, especially her granddaughter and her allies. Her vast knowledge of the supernatural world and formidable spiritual powers make her an invaluable asset to the team, guiding them through perilous encounters and offering wisdom when they need it most. ### Seiko Ayase: Personal Data & Biodata To better understand the character at the heart of the "Dandadan grandma age" mystery, here's a quick overview of Seiko Ayase's key details: | Attribute | Detail
