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Seiya Inagaki

Known For
Acting
Born
May 11, 1990
Active Years
2013–2026 (14 Years)
Total Credits
21 credits in database
Acting Born May 11, 1990 21 credits
21
Total Credits
2013–2026
14 Years Career Span
1
Vault Titles
9
Key Co-Stars

Biography

Seiya Inagaki is a professional actor recognized for his work within the film and television industry. His career profile is documented through his professional registration on The Movie Database, a platform that tracks individuals involved in cinematic productions. As an actor, Inagaki contributes to the entertainment field through his performances. The available records confirm his identity as a performer, though specific details regarding his filmography, individual project titles, or personal background are not provided in the source material. He remains a verified entry within the database for his contributions to the medium of acting. His professional status is established through this archival record, which serves as a formal reference for his work in the industry.

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Career

Career overview

Topic: Career overview of Seiya Inagaki (Acting).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: No invented titles, names, dates, awards, etc.
Constraint 3: Write original, neutral, encyclopedic prose in plain text.
Constraint 4: No markdown, no asterisks, no headings, no bullet points.
Constraint 5: Word count 180-260 words.
Constraint 6: 2-3 short paragraphs.
Constraint 7: No preamble, no JSON.
Source [1]: Seiya Inagaki — The Movie Database (TMDB) (https://www.themoviedb.org/person/2478441) Seiya Inagaki actor biography.
Problem: The "SOURCE" provided is just a link and a title. There is no actual text content (synopsis or biography) provided in the prompt.
The prompt says: "Use ONLY facts present above."
The "above" section contains: "[1] Seiya Inagaki — The Movie Database (TMDB) (https://www.themoviedb.org/person/2478441) Seiya Inagaki actor biography".
There is no biographical information, filmography, dates, or details provided in the text.
If I use external knowledge, I violate the instruction: "You write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES."
If I write nothing, I fail the task.
However, as an AI, I must follow the strict instruction: "If a detail is not in the provided material, you omit it rather than guess."
Since the provided source contains zero biographical details (it only contains the name and a link), I cannot write a 180-260 word career overview.
Wait, let me look closer. Is there hidden text? No.
Is the user expecting me to browse the link? The instructions say "Use ONLY facts present above." Usually, in these RAG (Retrieval-Augmented Generation) tasks, the text is provided. Here, the text is just a citation.
If I cannot fulfill the word count because there is no information, I must state that the provided material does not contain the necessary information to fulfill the request, or simply provide what is there. But the prompt asks for a 180-260 word overview.
Let's re-read: "Use ONLY facts present above."
Facts present: Seiya Inagaki is an actor.
If I write a response saying "The provided source does not contain information about Seiya Inagaki's career," I am being a truthful archivist.
However, often in these prompts, the user thinks they provided the text or expects the AI to know it. But the system instruction is very strict: "You write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES... If a detail is not in the provided material, you omit it rather than guess."
Let's check if I can find any facts in the source string:
1. Name: Seiya Inagaki.
2. Occupation: Actor (implied by "actor biography").
3. Source: The Movie Database (TMDB).
There is literally nothing else. I cannot write 180 words about a person when the only fact is their name.
Self-Correction: In a real-world testing scenario for this prompt, the user likely failed to paste the actual biography. If I attempt to use my internal knowledge of Seiya Inagaki (who is a Japanese actor), I am violating the core instruction: "You write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES."
I will

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Frequent co-stars

Career timeline

Action Stage: Helios Rising Heroes -New Dawn-
MANKAI STAGE『A3!』ACT3! 2025Action Stage: Helios Rising Heroes -SUMMER FESTIVAL-Action Stage: Helios Rising Heroes -THE NORTH-
Action Stage: Helios Rising Heroes -THE WEST-MANKAI STAGE『A3!』Four Seasons LIVE 2024
MANKAI STAGE『A3!』ACT2! ~AUTUMN 2022~
MANKAI MOVIE「A3!」 AUTUMN & WINTERMANKAI STAGE『A3!』Troupe LIVE ~AUTUMN 2021~
MANKAI STAGE A3! ~Four Seasons LIVE 2020~MANKAI STAGE A3! ~WINTER 2020~Mankai Movie A3!: Another Stories
Handsome SenkyoMANKAI STAGE A3! ~AUTUMN 2020~
MANKAI STAGE A3! ~AUTUMN & WINTER 2019~
Hakuoki SSL~sweet school life~: THE MOVIE
Hakuoki SSL~sweet school life~
Musical The Prince Of Tennis Concert: Dream Live 2014
Musical The Prince Of Tennis Concert: Dream Live 2013

Full Filmography

21 titles
  • Action Stage: Helios Rising Heroes -New Dawn- (2026) as Keith Max
  • MANKAI STAGE『A3!』ACT3! 2025 (2025) as Omi Fushimi
  • Action Stage: Helios Rising Heroes -SUMMER FESTIVAL- (2025) as Keith Max
  • Action Stage: Helios Rising Heroes -THE NORTH- (2025) as Keith Max
  • Action Stage: Helios Rising Heroes -THE WEST- (2024) as Keith Max
  • MANKAI STAGE『A3!』Four Seasons LIVE 2024 (2024) as Omi Fushimi
  • MANKAI STAGE『A3!』ACT2! ~AUTUMN 2022~ (2023) as Omi Fushimi
  • MANKAI MOVIE「A3!」 AUTUMN & WINTER (2022) as Omi Fushimi
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  • MANKAI STAGE『A3!』Troupe LIVE ~AUTUMN 2021~ (2022) as Omi Fushimi
  • MANKAI STAGE A3! ~Four Seasons LIVE 2020~ (2021) as Omi Fushimi
  • MANKAI STAGE A3! ~WINTER 2020~ (2021) as Omi Fushimi
  • Mankai Movie A3!: Another Stories (2021) as Omi Fushimi
  • Handsome Senkyo (2020)
  • MANKAI STAGE A3! ~AUTUMN 2020~ (2020) as Omi Fushimi
  • MANKAI STAGE A3! ~AUTUMN & WINTER 2019~ (2019) as Omi Fushimi
  • Hakuoki SSL~sweet school life~: THE MOVIE (2016) as Sanosuke Harada
  • Hakuoki SSL~sweet school life~ (2015) as Sanosuke Harada
  • Musical The Prince Of Tennis Concert: Dream Live 2014 (2014) as Sadaharu Inui
  • Musical The Prince Of Tennis Concert: Dream Live 2013 (2013) as Inui Sadaharu
  • MANKAI STAGE『A3!』ACT2! ~AUTUMN 2023~ as Fushimi Omi
  • The Fountain Pen of Collin de Plancy

Frequently Asked Questions

What movies or TV shows is Seiya Inagaki best known for?

Seiya Inagaki is widely recognized for notable roles and projects including Action Stage: Helios Rising Heroes -New Dawn- (2026).

When and where was Seiya Inagaki born?

Seiya Inagaki was born on May 11, 1990.

How many credits does Seiya Inagaki have?

Seiya Inagaki has accumulated over 21 film and television credits across a career spanning from 2013 to 2026.

What is Seiya Inagaki's background in cinema and television?

Seiya Inagaki is a professional actor recognized for his work within the film and television industry. His career profile is documented through his professional registration on The Movie Database, a platform that tracks individuals involved in cinematic productions. As an actor, Inagaki contributes to the entertainment...

Seiya Inagaki by the numbers

21credits
19films
2TV series
2013–2026active years

Age in their best-rated roles

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