based on true story,gay theme,boys' love (bl),melodrama

The 21-Day Theory (2025)

Poster for The 21-Day Theory

Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.

Cast & Crew

Director
Chainarong Tampong
  • Profile picture of Narikun Ketprapakorn
    Pie Narikun Ketprapakorn
  • Profile picture of Supakorn Saokhor
    Boss Supakorn Saokhor
  • Profile picture of Pataraphol Wanlopsiri
    Euro Pataraphol Wanlopsiri
  • Profile picture of Dom Haetrakul
    Barami Dom Haetrakul
Poster for Season 1

Season 1

2025

4 episodes

Season 1 of The 21-Day Theory premiered on January 17, 2025

Using the 21-Day Theory, a determined woman pursues a wealthy man to prove he's straight—but the truth defies her expectations.

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Keywords

  • based on true story
  • gay theme
  • boys' love (bl)
  • melodrama