The 21-Day Theory
Series Overview
Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
1 Season • 4 Episodes
45 min per episode
2025 – 2025
Premiered: Fri, Jan 17, 2025
Creative Production Team
Latest Aired Episode
Season 1, Episode 4: “Episode 4”
Seasons & Episodes Breakdown
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
“เป็นแฟนกัน 21 วัน” สุดท้ายแล้วทฤษฎีนี้จะลงเอยแบบไหน ? [Club Friday The Series ทฤษฎี 21 วัน Trailer]
Type: Trailer • Published 2025-01-06
Cast & Creators
Explore Star Directory →
Creative Leadership & Key Crew
Chainarong Tampong
Siwarat Harnpanich
Paiboon Phupradub
Saithip Montrikun Na Ayudhaya, Vorarit Vaijairanai
Department Leadership Roster
Chainarong Tampong
Director
Paiboon Phupradub
Director of Photography
Production Stills & Gallery
Official cinematic photography and background stills for The 21-Day Theory.
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Frequently Asked Questions About The 21-Day Theory
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is The 21-Day Theory about?
Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.
How many seasons does The 21-Day Theory have?
The 21-Day Theory comprises 1 season available to explore.
Who stars in The 21-Day Theory?
Key cast members in The 21-Day Theory include Narikun Ketprapakorn, Supakorn Saokhor, Pataraphol Wanlopsiri, Dom Hetrakul.
Who created or directed The 21-Day Theory?
The 21-Day Theory was developed and directed by Chainarong Tampong.