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Season 1
4 Episodes

Episode 1
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Episode 1
Episode 1
Episode 2
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Episode 2
Episode 2
Episode 3
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Episode 3
Episode 3
Episode 4
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Episode 4
Episode 4

21 Days Theory

Overview

Q, an ordinary guy, faces a 21-day challenge to beat the perfect X, but as they grow closer, unexpected feelings and chaos emerge.
friendship
high school
romance
secondary couple
secret crush
+1 more
Last Updated: July 1, 2025

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