Perfect 10 Liners, known in Thai as Sai Rahat Thewada, has established itself as one of the most ambitious Thai Boys' Love (BL) series of the 2024-2025 television season. Produced by the industry giant GMMTV and directed by New Siwaj Sawatmaneekul—the visionary behind hits like Between Us and Until We Meet Again—this series adapts three popular novels by the author Jittirain into a single, cohesive 24-episode narrative. The series revolves around an elite mentorship circle in an engineering faculty, where students are chosen based on their outstanding looks and character, forming the legendary "Perfect 10" line.

The show is structured into three distinct story arcs, each focusing on a different pair of engineering students navigating the complexities of university life, mentorship traditions, and unexpected romance. Below is a comprehensive look at the cast and characters who bring this intricate world to life.

The First Arc: Arm and Arc (Engineer Cute Boy)

The series opens with the story of Arm, a first-year student who finds himself at the center of campus drama due to his secret role in managing a popular social media page. This arc explores the friction and eventual attraction between a junior and his senior mentor.

Book Kasidet Plookphol as Arm

Book Kasidet portrays Arm, a freshman engineering student who is energetic, observant, and slightly mischievous. Arm is the administrator of the "Engineer Cute Boy" fan page, a platform dedicated to showcasing the most attractive students on campus. His life takes a sharp turn when he accidentally posts a photo of a high-profile senior without consent, leading to a confrontation that sparks the series' central conflict.

Force Jiratchapong Srisang as Arc

Force Jiratchapong plays Arc (Anol Paraminphisan), a senior student known as "Perfect 10 Ferocious." As a member of the elite mentorship line, Arc is respected, feared, and incredibly private. When Arm exposes his image online, Arc uses the opportunity to keep the junior close, leading to a dynamic where the line between a strict mentor and a protective lover becomes blurred.

The Second Arc: Yotha and Gun (Wit Sawakam Prasat)

The second portion of the series shifts focus to the "Mysterious" member of the Perfect 10 line and a junior who struggles with a unique personal challenge. This arc is noted for its emotional depth and the themes of comfort and healing.

Perth Tanapon Sukumpantanasan as Yotha

Perth Tanapon takes on the role of Yotha (Yo), often referred to as "Perfect 10 Mysterious." Yotha is characterized by his quiet demeanor and enigmatic presence. Despite his reserved nature, he is deeply observant and possesses a protective streak that manifests when he encounters Gun. Perth brings a mature and grounded energy to this complex character.

Santa Pongsapak Udompoch as Gun

Santa Pongsapak plays Gun (Gunyukhol), a first-year student who becomes Yotha’s roommate. Gun suffers from a severe fear of the dark (nyctophobia), which creates significant hurdles for his transition to university dorm life. The relationship develops as Yotha becomes Gun’s "safe space," providing the light and security Gun needs to overcome his anxieties.

The Third Arc: Faifa and Wine

The final arc explores the relationship between a supportive younger brother and a senior who is struggling to get his life back on track after emotional setbacks.

Junior Panachai Sriariyarungruang as Faifa

Junior Panachai portrays Faifa (Fa), the younger brother of Yotha. Unlike his brother’s mysterious aura, Faifa is outgoing, charismatic, and proactive. When he notices that Wine is being neglected by his actual mentor, Faifa steps in to provide the guidance and emotional support that Wine desperately lacks, eventually leading to a deep romantic bond.

Mark Jiruntanin Trairattanayon as Wine

Mark Jiruntanin plays Wine (Witsawa), known as "Perfect 10 Piteous." Wine is a character who often finds himself in unfortunate situations, feeling overlooked and emotionally drained. His journey is one of self-discovery and finding a partner who truly sees his value beyond his outward "pitiable" circumstances.

Supporting Cast and Ensemble Members

A production as large as Perfect 10 Liners requires a robust supporting cast to populate the engineering faculty and provide the social context for the main couples. The following actors play vital roles as friends, family members, and rivals.

The Engineering Circle and Friends

  • Marc Natarit Worakornlertsith as Pond: A close friend of Arc, Marc provides much of the comedic relief and social commentary within the senior group.
  • Poon Mitpakdee as Sand: Playing Arm’s roommate and confidant, Sand is often the voice of reason when Arm’s schemes with the fan page go awry.
  • JJ Chayakorn Jutamas as Pipo: Another integral member of Arm’s social circle, contributing to the "Engineer Cute Boy" page dynamics.
  • Drake Sattabut Laedeke as Cop: A senior student and friend to Arc, representing the traditional engineering student archetype.
  • Aou Thanaboon Kiatniran as Klao: A character who interacts closely with the Yotha and Gun arc, often involved in the faculty's social events.
  • Boom Tharatorn Jantharaworakarn as Warich: A student whose interactions with the main cast highlight the competitive nature of the engineering mentorship lines.

Family and Additional Characters

  • Emi Thasorn Klinnium as Yeepun (Pun): One of the few prominent female characters in the faculty, she brings a different perspective to the male-dominated engineering environment.
  • Fluke Jeeratch Wongpian as Jet: A supporting character whose relationship with the main group adds layers to the campus social hierarchy.
  • Ford Allan Asawasuebsakul as Book: A friend of Gun who supports him through his early struggles with dormitory life.
  • Louis Thanawin Teeraphosukarn as Kong: A student who appears throughout the series, often found at the center of campus gatherings.
  • Earn Preeyaphat Lawsuwansiri as Angun: A character who bridges various social groups within the university.

Production and Creative Team

The success of Perfect 10 Liners is largely attributed to the experienced team behind the camera.

  • Director: New Siwaj Sawatmaneekul: Known for his ability to capture intense emotional chemistry and cinematic visuals, Director New manages the transition between the three distinct novel adaptations seamlessly.
  • Original Story: Jittirain: The series is based on three interconnected novels. Jittirain is a well-known name in the BL literature world, famous for creating relatable characters and engaging "slow-burn" romances.
  • Network: GMMTV: As the leading producer of Thai youth content, GMMTV provided the platform and resources to execute such a high-budget, multi-arc series.

Detailed Character Archetypes in the "Perfect 10" Universe

The "Perfect 10" concept is more than just a title; it is a legacy within the fictional engineering faculty. Each member of this line is expected to uphold a certain standard of excellence, which often puts immense pressure on their personal lives.

The Ferocious Senior (Arc)

Arc represents the "Golden Standard" of the faculty. His character arc involves breaking down the walls he has built around himself to allow Arm in. His "ferociousness" is revealed to be a protective mechanism rather than true malice.

The Healing Mentor (Yotha)

Yotha’s character provides a unique take on the "strong, silent type." His arc with Gun focuses on domesticity and the quiet moments of care—such as staying awake so Gun can sleep with the lights on—which resonated deeply with the audience.

The Proactive Protector (Faifa)

Faifa’s character serves as the bridge between the different arcs. Being Yotha’s brother, he connects the families and shows a different style of mentorship—one that is based on empathy and filling the gaps left by others.

Conclusion

Perfect 10 Liners is a testament to the evolving landscape of Thai television, where complex, multi-layered narratives are becoming the standard. By casting established pairs like Force-Book and Perth-Santa alongside rising stars like Junior-Mark, GMMTV has created a series that appeals to both long-time fans and new viewers. The cast's ability to portray the nuances of the engineering faculty’s traditions while delivering heartfelt romantic performances is the core reason for the show's high ratings and international popularity.

Frequently Asked Questions (FAQ)

What are the three stories included in Perfect 10 Liners?

The series combines three novels: Engineer Cute Boy (Arm & Arc), Wit Sawakam Prasat (Yotha & Gun), and a third segment focusing on Faifa and Wine.

Who directed the series?

The series was directed by New Siwaj Sawatmaneekul, a veteran director in the Thai BL industry.

How many episodes are in the series?

The series consists of 24 episodes, allowing each of the three couples approximately eight episodes worth of narrative focus, though their stories often overlap.

Where can I watch Perfect 10 Liners?

The series originally aired on GMM 25 and is available for international audiences on GMMTV’s official YouTube channel and the WeTV streaming platform.

Is the series based on a book?

Yes, it is based on the popular works of the author Jittirain, who also wrote the stories for other famous series such as 2gether and Theory of Love.