Seigo Agatsuma

Honestly, the first thing that got me about Seigo Agatsuma is the name — it has this rare, almost old-school weight to it that you don't forget once you've heard it. Born in Tokyo in 1998, he started out as a child actor, which tells you something right there: this isn't someone who wandered into the industry on a whim. Kids who stick with performing past the awkward years and grow into adult roles usually have a genuine hunger for it, a need to be in the work rather than just in the spotlight. His public profile is deliberately low-key — no flashy agency announcements, no constant social media noise — and somehow that restraint feels right for a Taurus. That sign tends to build slowly and stubbornly, earning ground rather than grabbing it. I get the sense he's the kind of actor you suddenly notice in something and think, wait, how long has he been this good? Keep an eye on him through the late 2020s; I have a feeling the public profile is about to catch up with the craft.

Seigo Agatsuma is a Japanese actor and talent born on May 10, 1998, in Tokyo. He began his career as a child actor and has continued working in the Japanese entertainment industry. Further details about his filmography and agency remain private or unknown as of 2024.

Name (English)

Seigo Agatsuma

Name (Japanese)

上妻成吾

Reading

あがつま せいご

Born

May 10, 1998 (age 28)

Zodiac / Chinese zodiac

Taurus / Tiger (寅)

Origin

Tokyo, Japan

Occupation

Actor / Child Actor / Talent

Motto

Private

• Xhttps://x.com/seigo_55
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E4%B8%8A%E5%A6%BB%E6%88%90%E5%90%BE

Tags

• From Tokyo
• Actor
• Child Actor
• Talent

Last updated

2026-06-02

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.