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Oxygen: The Series is a 2020 Thai drama about a boy who has nothing left but his smile and one that has everything but that, who meet in a cafe every night.


Orphaned at a very young age, Gui, a fourth-year engineering student, has had to work hard and earn for himself for as long as he can remember. Still, through the test of time, he still has a soft demeanor and a smile on his face.

Solo, a freshman in the Faculty of Music, can get anything he wants with a flick of his wrist. Money, fame, good looks, the boy has everything, except his smile. When Solo's mother passed away, she took his smile with her. Nothing could fill this missing hole in him... that is — until one day when he sees a smiling boy working at a cafe.

One night the two worlds collide in a small coffee shop. For a cup of hot milk and a warm smile, Solo finds himself back in the cafe every night. For a soft boy who reminds him of a husky, Gui finds himself waiting for a late-night visitor with a cup of hot milk, night after night.

Night after night, the two boys continue to meet. At the same spot, at the same time, until they soon come to realize that they have become each other's breath. A necessity. Just like Oxygen.[1]


A freshman of Fine Arts, majoring in Music, a Prom King and soon to be College's Prom King. He may appear stubborn and quiet but guitar is the love of his life.[2]
  • Petch Chanapoom Thenwong as Gui
A kind warm cheerful and comforting senior of Mechanical Engineering, a former Prom King and an orphan who makes a living as a barista.[3]
  • Boss Thanabat Ngamkamolchai as Kao Ashira
A talkative charming careless freshman of Fine Arts, majoring in Music. He's the college's lead singer and Solo's best friend.[4]
  • Thanyanan Pipatchaisiri as Khim
A sophomore of Humanities, majoring in Korean. A part-time barista "Fujoshi" whose imagination is unrivaled.[5]
A senior of International Business Management, an heir to a business tycoon whose introversion keeps others away.[6]
  • Kan Kunchanuj Kengkarnka as Dr. Petch
A quiet 29 years old pediatrician. He is lucky in game but not quite in love. His sincerity can easily attract all to fall.[7]
  • Yuuki as Dr. Perth
A specialist doctor, a bro of Dr. Petch since high school. He knows what Dr. Petch wants as well as those around him.[8]
  • Fourwheels as Khem
A high school student and Khim's brother. Having lost both parents since childhood, his sister has spoiled him so much that he becomes hotheaded and addicted to games.[9]

  • Toon Rapeepat Aimphan as Jedi
  • Ishi Thitiwat as Moon
  • Nathalie Ducheine as Linda, Solo's fiancé
  • Prince Naradon Namboonjit


Main Article: Oxygen: The Series OST


Episode Aired
Episode 01 September 12, 2020
Episode 02 September 19, 2020
Episode 03 September 26, 2020
Episode 04 October 3, 2020
Episode 05 October 10, 2020
Episode 06 October 17, 2020
Episode 07 October 24, 2020
Episode 08 October 31, 2020
Episode 09 November 7, 2020
Episode 10 November 14, 2020
Episode 11 November 21, 2020
Episode 12 November 28, 2020
Episode 13 December 5, 2020


  • The drama was based on the novel Oxygen written by Chesshire and illustrated by Suki.
  • The series' release was postponed because of the COVID19 outbreak.