Back to 21 Days Theory
Season 1
4 Episodes2022
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.
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Episodes (4)
Ep 1
Episode 1
★10.0
2022-08-07•39m
Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.
Ep 2
Episode 2
★10.0
2022-08-14•38m
After X’s injury, Q tends to him closely, giving them a chance to see each other differently.
Ep 3
Episode 3
★10.0
2022-08-21•44m
As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.
Ep 4
Episode 4
★10.0
2022-08-28•40m
At a turning point, Q and X must face whether the “21-day theory” will define their future.