MovieBox Logo
HomeMoviesTV ShowsVibe EngineCrossoverMarathonRouletteEditorialWatchlist
MovieBox Logo

Your pure informational hub for discovering movies & TV shows.

Navigation

  • Home
  • Movies
  • TV Shows

Legal

  • Terms of Service
  • Privacy Policy

Company

  • About Us
  • Contact
  • Editorial Blog

© 2026 Movie Box LLC. Data provided by TMDB.

21 Days Theory
21 Days Theory

21 Days Theory (2022)

⭐7.1
1 Seasons, 4 Episodes
Drama
Where to Watch?

Overview

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.

Top Cast

Portrait of actor Patsapon Jansuppakitkun

Patsapon Jansuppakitkun

X

Portrait of actor Khunakorn Sunantham

Khunakorn Sunantham

Q

Portrait of actor Prat Itthichaicharoen

Prat Itthichaicharoen

Toy

Portrait of actor Jirayu Sahguansin

Jirayu Sahguansin

Frank

Portrait of actor Warisara Jitpreedasakul

Warisara Jitpreedasakul

Mind

Portrait of actor Pischapron Ketawattananon

Pischapron Ketawattananon

Mook

Portrait of actor Sarawut Siriphet

Sarawut Siriphet

Man

Community Reviews

✍️

Similar TV Shows

View All
Poster for You are my only Madonna

You are my only Madonna

⭐ 0.02003
Poster for Sana Maulit Muli

Sana Maulit Muli

⭐ 8.02007
Poster for Tokyo Friends

Tokyo Friends

⭐ 0.02005
Poster for White Album

White Album

⭐ 6.82009
Poster for The Strauss Family

The Strauss Family

⭐ 0.01972
Poster for Doctors' Private Lives

Doctors' Private Lives

⭐ 0.01979
Poster for Kidnapped

Kidnapped

⭐ 6.91979
Poster for The Capture of the Green River Killer

The Capture of the Green River Killer

⭐ 6.22008
Poster for Brilliant Class

Brilliant Class

⭐ 4.02022
Poster for A Date With the Future

A Date With the Future

⭐ 7.32023
Poster for The Secret House

The Secret House

⭐ 5.22022
Poster for The Lady in Butcher’s House

The Lady in Butcher’s House

⭐ 4.72022
Poster for Zhao Jiadi

Zhao Jiadi

⭐ 6.32022
Poster for Nollatoleranssi

Nollatoleranssi

⭐ 0.02004
Poster for Mahram Untuk Najwa

Mahram Untuk Najwa

⭐ 10.02021
Poster for Tian Jiang Chu Shen Du Chong Wo

Tian Jiang Chu Shen Du Chong Wo

⭐ 0.02023
Poster for Twenty Years Old

Twenty Years Old

⭐ 0.02003
Poster for The Railway Children

The Railway Children

⭐ 5.51968
Poster for Kichijoji Losers

Kichijoji Losers

⭐ 8.02022
Poster for Rebel Cheer Squad: A Get Even Series

Rebel Cheer Squad: A Get Even Series

⭐ 7.22022