The 21-Day Theory
The 21-Day Theory
2025
1 Season
9.0
Drama

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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Episodes

Episode 1
E1Jan 17, 202545m

Episode 1

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Episode 2
E2Jan 24, 202545m

Episode 2

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Episode 3
E3Jan 31, 202545m

Episode 3

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Episode 4
E4Feb 7, 202545m

Episode 4

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Top Cast

Narikun Ketprapakorn

Narikun Ketprapakorn

Pie

Supakorn Saokhor

Supakorn Saokhor

Boss

Pataraphol Wanlopsiri

Pataraphol Wanlopsiri

Euro

Dom Haetrakul

Dom Haetrakul

Barami