
21 Days Theory — Season 1
A playful rivalry turns into something more when a cocky senior dares his classmate to win the school’s top celebrity’s heart in just 21 days.
About this season
A playful rivalry turns into something more when a cocky senior dares his classmate to win the school’s top celebrity’s heart in just 21 days.
Episodes (4)

1. Episode 1
10.0Aired 7 August 2022 • 39 min
Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.

2. Episode 2
10.0Aired 14 August 2022 • 38 min
After X’s injury, Q tends to him closely, giving them a chance to see each other differently.

3. Episode 3
10.0Aired 21 August 2022 • 44 min
As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.

4. Episode 4
10.0Aired 28 August 2022 • 40 min
At a turning point, Q and X must face whether the “21-day theory” will define their future.