Key art for the 2026 Thai BL series Good Boy
Good Boy (2026) key art. © GMMTV. Image via TMDB, shown solely to identify the series being reviewed.

Good Boy

On AirTV Series🇹🇭EP 3

What happens

Good Boy (Thai: จิรภัทรจะเป็นเด็กดี) is a Thai boys' love drama due to premiere on Sunday 11 October 2026. It is scheduled to air on Sundays at 8:30 pm on GMM 25 and at 9:30 pm on OneD, with replays on Viu, across 10 episodes of about 45 minutes each. The Thai title translates as Jiraphat Will Be a Good Boy.

It is adapted from the web novel Jiraphat Will Be a Good Boy by cyn.d.r. New Siwaj Sawatmaneekul is credited as director and Sataporn Panichraksapong as executive producer. GMMTV produces it together with Studio Wabi Sabi, and the series was announced on 25 November 2025 at the GMMTV Magic Vibes Maximized event.

The story follows a thirty-year-old man who dies with deep regrets and is given a second chance to live, starting again from the age of seventeen. His aim is to correct the mistakes of his past and live a better life. The drama is set in a school, where his childhood friend Ruth is the student president, and its premise rests on the contrast between what the character knows as an adult and the situation he is returned to.

Mick Metas Opas-iamkajorn is announced to play Jiraphat Jaroenwong, known as Ji, and Luke Peemsan Sotangkur is announced to play Atiwitch Rattanawatthana, known as Ruth. Both are the main cast of the series. Thitipoom Techaapaikhun (New) and Tawan Vihokratana (Tay) are credited as the adult versions of Ji and Ruth. Tarnpol Pongnarisorn, Ing Asavanund, Jeeratch Wongpian and Samantha Melanie Coates are in the supporting cast.

CONTENT DETAILS

Native Title
จิรภัทรจะเป็นเด็กดี
Original Title
Good Boy
Also Known As
จิรภัทรจะเป็นเด็กดี, Jiraphat Will Be a Good Boy, Chiraphat Cha Pen Dek Di
Adaptation
Adapted from the web novel Jiraphat Will Be a Good Boy by cyn.d.r.
Themes
Key Themes
RegretSecond ChanceReturn To The PastWeb Novel AdaptationSchool SettingSunday Broadcast
Country
Language
Thai
Networks
Seasons
1
Episodes
2 / 10
Duration
45 minutes
Aired Start
Release Year

Before You Watch

  • Premiere: It is due to start on Sunday 11 October 2026.
  • Where: GMM 25 airs it at 8:30 pm and OneD at 9:30 pm on Sundays, with replays on Viu.
  • Length: It has 10 episodes of about 45 minutes.
  • Source: It adapts the web novel Jiraphat Will Be a Good Boy by cyn.d.r.
  • Leads: Mick Metas Opas-iamkajorn and Luke Peemsan Sotangkur head the cast.
  • Production: New Siwaj Sawatmaneekul directs, and GMMTV produces with Studio Wabi Sabi.

Reviewed by Renkaze

A title with a promise in it

The Thai title, จิรภัทรจะเป็นเด็กดี, is a sentence rather than a label. The English title shortens it to Good Boy, but the original reads as a resolution made by the main character, which fits a story about a man who is given another chance and decides to use it differently.

A second life as the central device

A thirty-year-old man dies with deep regrets and is given a chance to live again, starting at seventeen. The premise puts an adult's knowledge inside a school setting, and the drama is built around correcting the mistakes of the past and living a better life. Stories built on a return to the past depend on how much the character remembers and how much he decides to change, and the series is listed under the themes of regret, second chances and a return to the past.

Two actors for each lead

The cast list gives each of the two main characters a younger and an older actor. Mick Metas Opas-iamkajorn plays Ji and Luke Peemsan Sotangkur plays Ruth in the younger timeline, while Thitipoom Techaapaikhun and Tawan Vihokratana are credited as the adult Ji and the adult Ruth. That casting matches a story that moves between the life Ji left and the life he is given back.

Production and schedule

Sataporn Panichraksapong is credited as executive producer, and GMMTV makes the series together with Studio Wabi Sabi. The series adapts the web novel Jiraphat Will Be a Good Boy by cyn.d.r., whose title the Thai name follows in full. The announcement came at the GMMTV Magic Vibes Maximized event on 25 November 2025. With a first episode on 11 October 2026 and weekly Sunday broadcasts, the tenth and last episode is scheduled for 13 December 2026, so the whole run fits into ten weeks. Each Sunday carries two broadcast slots, one on GMM 25 and one on OneD, and Viu offers replays.

Themes

The drama is built on regret and the chance to act on it. A man who dies at thirty with deep regrets returns to the age of seventeen, so every choice he makes in the school years is weighed against what he remembers of the life that followed. The contrast between adult knowledge and a teenager's situation drives the premise.

The story also links past and present. Casting an adult and a school age actor for each lead signals that the later life stays in view while the younger one unfolds, and the title frames the whole drama as a promise to do better.

Interesting facts

  • The Thai title is a full sentence meaning Jiraphat will be a good boy.
  • Each of the two main characters has a younger and an adult actor in the cast list.
  • The series airs on GMM 25 at 8:30 pm and again on OneD at 9:30 pm on Sundays.

How it was made

The series was announced on 25 November 2025 at the GMMTV Magic Vibes Maximized event. Sataporn Panichraksapong is the executive producer, and GMMTV produces it with Studio Wabi Sabi.

OFFICIAL TRAILER

Episode guide: Good Boy

2 / 10 episodes aired · EP 3
EP 1
11 Oct 2026
Aired
EP 2
18 Oct 2026
Aired
EP 3
25 Oct 2026
Upcoming
EP 4
01 Nov 2026
Upcoming
EP 5
08 Nov 2026
Upcoming
EP 6
15 Nov 2026
Upcoming
EP 7
22 Nov 2026
Upcoming
EP 8
29 Nov 2026
Upcoming
EP 9
06 Dec 2026
Upcoming
EP 10
13 Dec 2026
Upcoming

FREQUENTLY ASKED QUESTIONS

When does Good Boy start?

It is due to premiere on Sunday 11 October 2026.

Where will it air?

On GMM 25 at 8:30 pm and on OneD at 9:30 pm on Sundays, with replays on Viu.

How many episodes does it have?

It has 10 episodes of about 45 minutes.

Is it based on a novel?

Yes, it adapts the web novel Jiraphat Will Be a Good Boy by cyn.d.r.

Who stars in it?

Mick Metas Opas-iamkajorn plays Jiraphat Jaroenwong and Luke Peemsan Sotangkur plays Atiwitch Rattanawatthana.

Who directs it?

New Siwaj Sawatmaneekul.

Who produces it?

GMMTV produces it together with Studio Wabi Sabi.

When was Good Boy announced?

It was announced on 25 November 2025 at the GMMTV Magic Vibes Maximized event.

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