The Hidden Moon

Lore & Background

The Hidden Moon follows Khen, an ordinary young man in the present day who begins to see and hear supernatural phenomena after being involved in an accident. During these events, he meets Matthew 'Mas' Coleridge, the son of the owner of a traditional Thai house during World War I. Bound together by a mysterious fate and the shared meaning of their names, the two develop a deep relationship while confronting the supernatural secrets surrounding their lives.

The main cast includes Kin Thanachai Sakchaicharoenkul as Khen and David Matthew Roberts as Matthew 'Mas' Coleridge. Supporting roles are played by Santa Napakawat Kettreekorn as Bing, Tonkla Patittada Photajareon as To, Jimmy Nuttapong Phaojinda as Thaen, Xobam Panichada Kongsawanya as Namwa, Tian Atcharee Buakhiao as Khampuan, Meme Kansuda Chanakeeree as Sompho, and Pom Kamonpop Kaewdiao as Aisaeng.

The series was produced by MGY Entertainment, directed by Intorn Lokaew, and written by Kak Supicha Anantachat. It premiered on One 31 and WeTV on 7 September 2024.

Reader's Guide

The Hidden Moon represents a notable entry in the Thai Boys' love television genre, blending fantasy elements with historical and supernatural themes. Its production by MGY Entertainment and release on both traditional broadcast (One 31) and streaming platform (WeTV) reflects the dual distribution strategy common for BL series in Thailand. The series' premise—linking a present-day protagonist to a character from World War I through supernatural encounters and a shared name meaning—offers a narrative that combines romance, mystery, and historical context. As a fantasy series, it contributes to the diversification of BL content beyond contemporary romance settings. The involvement of actors Kin Thanachai Sakchaicharoenkul and David Matthew Roberts in lead roles, along with a supporting cast, positions the series within the broader landscape of Thai BL productions. Its simultaneous uncut release on WeTV caters to audiences seeking the full version of the series, a common practice for streaming platforms in the region.

Did You Know?

• The series is also known by its Thai title เดือนพราง (RTGS: Duean Phrang).
• It was directed by Intorn Lokaew and written by Kak Supicha Anantachat.
• The story involves a character named Matthew 'Mas' Coleridge, whose father owned a traditional Thai house during World War I.
• The series premiered on both One 31 and WeTV on 7 September 2024.

Adaptation Lineage & Source Material

The Thai television drama Scarlet Heart Thailand draws its narrative roots from the 2005 Chinese novel Startling by Each Step, penned by author Tong Hua. This story has proven remarkably portable across East and Southeast Asian screens, with the Thai production marking the third full television adaptation of the source material. The journey began in 2011 when the original Chinese series Scarlet Heart brought the tale to life with Cecilia Liu and Nicky Wu in leading roles. Five years later, South Korea reimagined the premise as Moon Lovers: Scarlet Heart Ryeo, pairing Lee Ji-eun with Lee Joon-gi in a period romance that captured a massive audience. For the Thai iteration, GMMTV partnered with Nar-ra-tor to produce the series under the direction of Kanittha Kwanyu, bringing the beloved time-travel court intrigue to a new cultural context while preserving the core emotional architecture that made the novel resonate with readers worldwide.

Story & Thematic Core

At the heart of Scarlet Heart Thailand lies a tale of displacement and desire. A young woman from the twenty-first century, plagued by what feels like an unending run of misfortune, travels to Chiang Mai seeking a fresh start. Instead, a mysterious chain of events hurls her three centuries backward in time. She opens her eyes in the body of a frail noblewoman belonging to the Lanna Kingdom, a realm steeped in rigid social hierarchies and ancient customs utterly foreign to her. What follows is a high-stakes game of survival set against the backdrop of a royal succession dispute, where multiple princes scheme relentlessly to claim the throne. As alliances fracture and reform, the protagonist finds herself drawn into the gravitational pull of these ambitious young men, caught between the intoxicating pull of romance and the razor's edge of political danger. The narrative threads personal vulnerability with the grand machinery of courtly power, asking how one outsider can navigate a world where every smile conceals a blade.

Cast & Character Ensemble

The ensemble at the center of Scarlet Heart Thailand is led by Tontawan Tantivejakul, known as Tu, who embodies the dual identity of Fongnuan and Boon—the modern girl trapped in a noblewoman's body. Opposite her, Metawin Opas-iamkajorn, credited as Win, takes on the role of Prince Mueang Fah, one of several rival suitors vying for both the crown and the protagonist's affections. The princely cast is notably expansive, with Korapat Kirdpan (Nanon) as Prince Saen Thep, Tawan Vihokratana (Tay) as Prince Intharach, Nattawat Jirochtikul (Fourth) as Prince Chom Han, Phuwin Tangsakyuen as Prince Fah Ham, Tanapon Sukumpantanasan (Perth) as Prince Kong Thai, and Jiratchapong Srisang (Force) as Prince Pha Wiang. The supporting world is equally rich: Pansa Vosbien (Milk) plays Princess Hong Kham, Chanikarn Tangkabodee (Prim) appears as Buasai, and Sarunchana Apisamaimongkol (Aye) portrays Lady Manee Thip. Additional performers including Rutricha Phapakithi (Ciize), Nachcha Chuedang (Parn), Songsit Roongnophakunsri (Kob), Pitisak Yaowananont (Tae), Apasiri Nitibhon (Um), Sueangsuda Lawanprasert (Namfon), Napasranch Mittiraroch (Tuck), and Rasee Wacharapolmek (Organ) round out the courtly landscape.

Production Journey & Behind-the-Scenes

The path from announcement to camera was a carefully staged marathon. On 23 April 2024, GMMTV unveiled the project at its Up & Above Part 2 showcase held at Union Hall Bangkok, revealing the principal cast alongside a one-minute teaser video that first gave fans a glimpse of the series' visual tone. Pre-production work commenced in the latter half of that same year, and by September the cast had entered an intensive physical preparation phase, drilling in horseback riding, archery, traditional Thai dance, and sword combat to ensure their on-screen movements carried the weight of a period setting. The first full script read-through gathered the company together on 19 May 2025, a milestone that typically signals the transition from planning into active rehearsal. Principal photography then kicked off on 26 August 2025, marking the official start of the shoot. The production is a collaboration between GMMTV and Nar-ra-tor, with Kanittha Kwanyu at the helm as director, guiding this ambitious historical fantasy from page to screen.