Oxygen

A warm drink sparks a connection when insomniac Solo meets barista Gui at closing time.

At the school festival, Solo sings and hints at his heart—while Gui watches, unsure who it's meant for.

After the party, Gee takes care of a drunken Solo—while Solo faces loneliness despite his new title.

Gee saves Solo from danger, but Solo vanishes. When he returns, long-buried feelings stir again.

Solo invites Gee to camp, but jealousy flares. Meanwhile, Kim’s condition brings tensions with her brother.

Gee and Solo move in together—but a mysterious call and harsh rumors shake their peace.

A birthday surprise turns tense when Solo is arrested, and dark truths about his past come to light.

Gee rushes to his foster mother’s side in the hospital, as her final words leave a lasting mark.

Grieving, Gee visits the countryside. There, a child named Moon brings him unexpected warmth.

Solo, Gee, and Moon bond in nature, while Gee discovers a letter that could change everything.

Solo’s father demands a breakup. Meanwhile, Kao learns Pu is leaving, and hearts quietly break.

Gee struggles in his internship. Solo is trapped by family interference—and vanishes without word.

Solo returns. Gee’s big presentation looms. Can their love survive one final challenge?