TV series
21 Days Theory
2022, Thai, on YouTube. Created by Choi Sittichai Chutsiri.
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.
- Seasons
- 1
- Episodes
- 4
- Episode length
- 38 min
- Status
- Ended in 2022
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Where to watch 21 Days Theory
21 Days Theory isn’t listed on any OTT platform in India yet.
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Latest episode
S1 E4: Episode 4
Aired 28 August 2022
Seasons 1
Cast & crew
Details
- First aired
- 7 August 2022
- Last aired
- 28 August 2022
- Network
- YouTube
- Original title
- 21 วัน มีฉันมีเธอ
- Language
- Thai
- Country
- Thailand
- Type
- Miniseries
Check ratings elsewhere
News & fan talk
What 21 Days Theory is based on
21 Days Theory is based on a true story.
Source details from Wikidata and TMDB.
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21 Days Theory: quick answers
Is 21 Days Theory worth watching?
21 Days Theory doesn’t have enough ratings for a verdict yet.
How many seasons of 21 Days Theory are there?
21 Days Theory has 1 season and 4 episodes, about 38 minutes each.
Is 21 Days Theory finished?
Yes. 21 Days Theory ended in 2022, so you can watch the whole story.
Which OTT platform is 21 Days Theory on?
21 Days Theory isn’t listed on any OTT platform in India yet. (Checked 9 November 2026.)
21 Days Theory parents guide: is it suitable for kids?
No age rating is listed for 21 Days Theory yet.
What shows are like 21 Days Theory?
If you liked 21 Days Theory, try One Tree Hill, The Fosters, Heated Rivalry.
Who created 21 Days Theory?
21 Days Theory was created by Choi Sittichai Chutsiri and stars Patsapon Jansuppakitkun, Khunakorn Sunantham, Prat Itthichaicharoen.
What is 21 Days Theory based on?
21 Days Theory is based on a true story.