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.

Recommendations

  • Poster for 21 Days Theory
  • Poster for King of Jin in Tang Dynasty
  • Poster for Golden Trio
  • Poster for The Scale
  • Poster for 开播！情景喜剧
  • Poster for Ciudad Nueva
  • Poster for The Hoarder Next Door
  • Poster for The Dave Gorman Collection

Keywords

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