Koji Seki
Biography
Subject: Koji Seki (Actor).
Goal: Write a 90-130 word factual identity profile.
Constraints: Use ONLY provided facts. No inventions. No markdown (no asterisks, no headings, no bullets). Plain text only. Neutral, encyclopedic prose.
Word count target: 90-130 words.
Name: Koji Seki (関 幸治, Seki Kōji).
Birth Date: October 15, 1978.
Birthplace: Kawaguchi, Saitama, Japan (Source 1) / Saitama Prefecture, Japan (Source 2, 3).
Gender: Male.
Profession: Japanese actor.
Affiliation: Animo Produce.
Blood Type: O.
Height: 180 cm.
Known Credits: 23.
Age: 47 years old (as of the source date).
Koji Seki, also known as Seki Kōji or 関 幸治, is a Japanese actor. He was born on October 15, 1978, in Kawaguchi, Saitama, Japan. Seki is affiliated with Animo Produce and has 23 known credits in his acting career. He is a male with a blood type of O. His height is recorded as 180 cm.
Current word count: ~50 words.
Need to expand to reach 90-130 words without inventing facts.
Wait, the sources are quite sparse. I must be careful not to "fluff" with non-facts. I can only use the facts provided.
Facts available:
Name: Koji Seki (関 幸治, Seki Kōji)
Birth Date: October 15, 1978
Birthplace: Kawaguchi, Saitama, Japan
Gender: Male
Profession: Actor
Affiliation: Animo Produce
Blood Type: O
Height: 180 cm
Known Credits:
Career overview
Role: Meticulous television and film archivist.
Task: Write a career overview of Koji Seki (Acting).
Constraint 1: Use ONLY verifiable facts from provided SYNOPSIS and SOURCES.
Constraint 2: No invented titles, names, dates, awards, etc.
Constraint 3: Original, neutral, encyclopedic prose in plain text.
Constraint 4: No markdown, no asterisks, no headings, no bullet points.
Constraint 5: Length 180-260 words.
Constraint 6: 2-3 short paragraphs.
Constraint 7: No preamble, no JSON.
Name: Koji Seki (関 幸治, Seki Kōji).
Birthday: October 15, 1978.
Place of Birth: Kawaguchi, Saitama, Japan (Source 1) / Saitama Prefecture, Japan (Source 2, 3).
Gender: Male.
Height: 180 cm (Source 3).
Blood Type: O (Source 2, 3).
Affiliation: Animo Produce (Source 2).
Profession: Actor (Source 1, 2).
Known Credits: 23 (Source 1).
Paragraph 1: Personal details/Background.
Koji Seki, also known as Seki Kōji or 関 幸治, is a Japanese actor born on October 15, 1978. He was born in Kawaguchi, Saitama Prefecture, Japan. He is a male performer with a height of 180 cm and blood type O.
Paragraph 2: Professional details.
Seki is professionally affiliated with Animo Produce. His work in the industry is categorized under acting, and he has a total of 23 known credits.
Current Word Count Check:
"Koji Seki, also known as Seki Kōji or 関 幸治, is a Japanese actor born on October 15, 1978. He was born in Kawaguchi, Saitama Prefecture, Japan. He is a male performer with a height of 180 cm and blood type O. Seki is professionally affiliated with Animo Produce. His work in the industry is categorized under acting, and he has a total of 23 known credits."
Word count: ~65 words.
Problem: The prompt asks for 180-260 words. The provided sources are extremely sparse. I cannot invent anything. If I only use the provided facts, I will struggle to reach 180 words without being repetitive or violating the "no inventing" rule.
Re-evaluating the sources:
Name variations: Koji Seki, 関 幸治, Seki Kōji, Kouji Se.
Birth: October 15, 1978, Kawaguchi, Saitama Prefecture, Japan.
Physical: 180 cm, Blood Type O.
Career: Actor, 23 known credits, affiliated with Animo Produce.
Strategy to reach word count without violating rules:
I must expand on the existing facts using formal, encyclopedic language. I cannot add new facts. I will describe the biographical and professional information provided.
Drafting Attempt 2:
Koji Seki, also identified by the names Seki Kōji and 関 幸治, is a Japanese actor. He was born on October 15, 1978, in Kawaguchi, located within the Saitama Prefecture of Japan. According to biographical records, Seki is a male of blood type O and stands at a height of 180 cm.
In terms of his professional career, Seki is recognized for his work in acting. He is currently affiliated with the organization
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Career timeline
Full Filmography
23 titles- 名前、呼んでほしい (2025)
- Our Youth (2024) as Daisuke Sugawara
- The Science Club (2024) as Yanagida Kohei
- Chime (2024) as Yoshizawa
- Hitodzuma otoko (men)-tsukuri hiwaina ajiwai (2024)
- Haven of Peace (2024)
- Performing Kaoru's Funeral (2024)
- At the End of Desire (2024) as Kenji Sato
- Polar Night (2023)
- Gannibal (2022) as Seki (Detective)
- Mom in the Mirror (2022)
- Possibly, Huh Huh (2022)
- Intolerance (2021) as Wakita
- あ・く・あ〜ふたりだけの部屋〜 (2021)
- Red Post on Escher Street (2020) as Koizumi
- Married Woman's Wetland Disturbed by the Tip of the Tongue (2020) as Kôji Matsumura
- State of Emergency (2020) as Kodokuna 19-ji
- Abnormal Rodeo Blues (2020)
- The Lonely 19:00 (2020) as Father
- The Cuck, the Slag and the Stealer (2019) as Tamotsu
- Shin Godzilla (2016)
- The Sun (2016)
- Chronicle of My Mother (2012)
Frequently Asked Questions
What movies or TV shows is Koji Seki best known for?
Koji Seki is widely recognized for notable roles and projects including Gannibal (2022), Shin Godzilla (2016).
When and where was Koji Seki born?
Koji Seki was born on October 15, 1978 in Kawaguchi, Saitama, Japan.
How many credits does Koji Seki have?
Koji Seki has accumulated over 23 film and television credits across a career spanning from 2012 to 2025.
What is Koji Seki's background in cinema and television?
Subject: Koji Seki (Actor). Goal: Write a 90-130 word factual identity profile. Constraints: Use ONLY provided facts. No inventions. No markdown (no asterisks, no headings, no bullets). Plain text only. Neutral, encyclopedic prose. Word count target: 90-130 words. Name: Koji Seki (関 幸治, Seki Kōji). Birth Date: October ...
Koji Seki by the numbers
Age in their best-rated roles
- Gannibal (2022) as Seki (Detective) — aged about 43
- Shin Godzilla (2016) — aged about 37
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