21 Days Theory Season 1 Plot
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.
Season 1 Episodes
4 episodes
1
100
Episode 1
Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.
2
100
Episode 2
After X’s injury, Q tends to him closely, giving them a chance to see each other differently.
3
100
Episode 3
As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.
4
100
Episode 4
At a turning point, Q and X must face whether the “21-day theory” will define their future.