The distinction matters because the "first" label carries historical weight. Calling Love of Siam the first acknowledges Thai BL’s roots in high-art, critically acclaimed cinema, giving the genre an instant legitimacy it sometimes struggles to maintain. Calling Love’s Coming: The Series the first acknowledges the true moment of industrial genesis: when producers realized a film’s concept could be serialized, commercialized, and turned into a sustainable television product. Love of Siam provided the heart, Love’s Coming provided the format, and SOTUS provided the rocket fuel.
The actual title of the "first Thai BL series" most frequently falls to Love’s Coming: The Series (2014). Importantly, this series was a direct expansion of the 2014 film Love’s Coming (directed by Naphat Chaithiangthum), which itself was a lighter, more comedic take on the themes of Love of Siam . The series adaptation, airing on Bang Channel, took the film’s central couple—Pid and Gun, two high school friends whose relationship deepens after a drunken kiss—and extended their story over multiple episodes. Love’s Coming: The Series established the quintessential tropes of early Thai BL: the all-boys' school setting, a focus on the "cute" and "embarrassing" moments of nascent romance, an ensemble cast of attractive young actors, and a soundtrack of soft pop songs. While its production value was modest and its plot occasionally meandering, it was undeniably the first television series built entirely around a central BL couple and aimed directly at the emerging fandom. first thai bl series
Following close behind, SOTUS: The Series (2016) is often misidentified as the first due to its explosive international popularity, particularly via streaming platforms like Line TV and later YouTube with English subtitles. SOTUS refined the formula with a more structured plot based on a popular novel, featuring the "hazing" system between engineering students Arthit and Kongpob. Its success created the modern BL industry: merchandise, fan meetings, "official couples" (like Krist-Singto), and a dedicated global distribution network. However, SOTUS built upon the foundation laid by Love’s Coming two years prior. To credit SOTUS as the first is akin to crediting The Beatles for inventing rock and roll—they perfected it, but they were not the first. The distinction matters because the "first" label carries