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.
- Created by
- Choi Sittichai Chutsiri
Seasons and episodes
1 season · 4 episodes
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.
S1 E1Episode 1
Aug 7, 202239 min
Q meets X and is challenged to beat him in 21 days—sparking rivalry and unexpected bonds.
S1 E2Episode 2
Aug 14, 202238 min
After X’s injury, Q tends to him closely, giving them a chance to see each other differently.
S1 E3Episode 3
Aug 21, 202244 min
As their days together grow, Q’s feelings shift, and mutual understanding slowly deepens.
S1 E4Episode 4
Aug 28, 202240 min
At a turning point, Q and X must face whether the “21-day theory” will define their future.
Starring
Frequently asked questions
- Where can I watch 21 Days Theory?
- 21 Days Theory is not currently listed on a streaming service in the US. Use the country picker on the page to check other markets.
- How many seasons of 21 Days Theory are there?
- 21 Days Theory has 1 season and 4 episodes. Status: Ended.
- Will there be a new season of 21 Days Theory?
- 21 Days Theory has ended; no new episodes are scheduled. The final episode aired on August 28, 2022.
- Who stars in 21 Days Theory?
- 21 Days Theory stars Patsapon Jansuppakitkun, Khunakorn Sunantham, Prat Itthichaicharoen, Jirayu Sahguansin, Warisara Jitpreedasakul.
