The 21-Day Theory

The 21-Day Theory (2025)

★ 9.0 1 Season 4 Episodes Ended
Drama

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

Watch S1E1

Cast

Narikun Ketprapakorn
Narikun Ketprapakorn
Pie
 Supakorn Saokhor
Supakorn Saokhor
Boss
 Pataraphol Wanlopsiri
Pataraphol Wanlopsiri
Euro
 Dom Haetrakul
Dom Haetrakul
Barami

Seasons

Season 1

Trailer

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