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Seasons of 21 Days Theory

21 Days Theory currently has 1 season and 4 episodes. Most episodes run for around 38 minutes, offering a comfortable mid-length viewing experience. The series is currently marked as "Ended". The most recently aired episode came out in 2022.

21 Days Theory Season 1 • TV Show

Season 1

Are there new episodes of 21 Days Theory coming?

21 Days Theory is marked as an ended series, with its final episode airing on August 28, 2022. At this time there are no new seasons or episodes announced, so the release radar for this show is effectively closed unless a revival or spin-off is announced.

Watch the official trailers for 21 Days Theory

Watch the main official trailer for 21 Days Theory in one place. Most of these clips were released around July 2022, capturing the show at its peak marketing push. Use the carousel to sample the show's visual style, story hooks and production quality before you dive into full episodes.

Uploaded in July 2022

TV Shows like 21 Days Theory

If you enjoy 21 Days Theory, you may also like One Tree Hill, Star Trek and The O.C.. These recommendations share similar tone, themes, or genres, making them natural follow-ups once you finish this show, and can be streamed for free.

One Tree Hill • TV Show • Rating 7.8 out of 10

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Rating 7.8 out of 10.

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Rating 7.8 out of 10.

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Rating 7.8 out of 10.

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Rating 8.7 out of 10.

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Rating 7.7 out of 10.

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Rating 8.4 out of 10.

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Rating 8.4 out of 10.

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Rating 8.6 out of 10.

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Rating 9.1 out of 10.

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Rating 7.4 out of 10.

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Rating 8.6 out of 10.

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Rating 7.3 out of 10.

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Rating 7.0 out of 10.

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Rating 6.7 out of 10.

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Rating 8.1 out of 10.

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Rating 7.5 out of 10.

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Um Só Coração • TV Show • Rating 6.3 out of 10

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Rating 6.3 out of 10.

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Still Breathing • TV Show • Rating 9.0 out of 10

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Rating 9.0 out of 10.

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A Mission of the Heart • TV Show

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Rating 4.6 out of 10.

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Rating 7.0 out of 10.

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Where to watch 21 Days Theory for free?

21 Days Theory is available to stream on SuperFilmz. The series is primarily produced for audiences in TH, so availability can vary by region. However, you can watch full episodes of 21 Days Theory for free on SuperFilmz, with ads.

What is 21 Days Theory about?

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. It blends drama elements. The series reflects a distinct TH style and perspective. The story is shaped by its creator, Choi Sittichai Chutsiri.

Is 21 Days Theory worth watching?

If you enjoy drama stories, this series is a strong candidate for your watchlist.

Release pattern and schedule for 21 Days Theory

21 Days Theory has been releasing episodes between August 2022 and August 2022 across 1 season. So far there are 4 released episodes, giving you plenty of story to catch up on before the next drop.

Cast and creators of 21 Days Theory

The main cast includes Patsapon Jansuppakitkun, Khunakorn Sunantham and Prat Itthichaicharoen. Behind the scenes, it is created by Choi Sittichai Chutsiri, directed by Choi Sittichai Chutsiri.

Patsapon Jansuppakitkun

as X

Khunakorn Sunantham

as Q

Prat Itthichaicharoen

as Toy

Jirayu Sahguansin

as Frank

Warisara Jitpreedasakul

as Mind

Pischapron Ketawattananon

as Mook

Sarawut Siriphet

as Man

21 Days Theory Keywords(23)

Last Updated

This page was last updated on Sep 4, 2026, 1:53 AM