The On1y One

Season 1

When their parents marry, two high school students become stepbrothers and navigate their relationship, turning from enemies into something more special.

Where to Watch The On1y One • Season 1

12 Episodes

Beginning: You’re Not My Brother
E1
Beginning: You’re Not My BrotherWhen Sheng Wang unexpectedly becomes Jiang Tian's stepbrother and classmate, both of their lives are suddenly thrown into disarray.
Closer: It’s Only 4 Lips Touching Together
E2
Closer: It’s Only 4 Lips Touching TogetherAs Sheng Wang and Jiang Tian awkwardly start living under the same roof, an unexpected encounter at school leaves them both flustered.
Actually: We Can Give It a Go
E3
Actually: We Can Give It a GoSheng Wang's attitude towards his stepmom drives a rift between him and Jiang Tian, but an impulsive night out brings them closer.
Splendor: At the End of the World
E4
Splendor: At the End of the WorldFrom home to school, Sheng Wang and Jiang Tian learn to cherish each other's support and company. Meanwhile, tender feelings begin to emerge.
Closed: Waiting for the Wind
E5
Closed: Waiting for the WindAfter discovering that someone beat up his bullies, Sheng Wang is caught off guard by Jiang Tian's abrupt decision to move away.
Plan : When to Open for Business?
E6
Plan : When to Open for Business?A parent–teacher meeting becomes a burden for Sheng Wang and Jiang Tian. Later, teachers summon them both to face their bullies.
Belonging: Let’s Live on Campus
E7
Belonging: Let’s Live on CampusSheng Wang learns more about Jiang Tian's childhood during a lunch break. Worried about Sheng Wang's absence, Jiang Tian skips class to track him down.
Sparkle: Teenagers
E8
Sparkle: TeenagersSheng Wang's wish to move out of the house takes his family by surprise. Now officially roommates, he and Jiang Tian brace for a new chapter together.
Naked: The Blossom of Youth
E9
Naked: The Blossom of YouthSheng Wang and Jiang Tian deliver impressive performances during their school's field day — until an unexpected injury lands one of them in trouble.
Thief: Who Crossed the Boundary?
E10
Thief: Who Crossed the Boundary?A sprained ankle forces Sheng Wang to temporarily return home. Just as he sneaks back to his dorm, an intruder appears and causes chaos. Jenny Yang starts to have a crush on Lin Bei Ting.
Kiss: It’s Only 4 Lips Touching Together?
E11
Kiss: It’s Only 4 Lips Touching Together?Sheng Wang advances to the next round of an English contest with Jiang Tian. Later, he accidentally witnesses a private moment between two teachers.
New Beginning: Pain is Necessary for Rebirth
E12
New Beginning: Pain is Necessary for RebirthIntrigued by his own feelings, Sheng Wang starts to see Jiang Tian in a different way. Things that were not perceived before become more relevant. Surrounded by these changes, then, Sheng Wang decides to take another step in order to stop the problem in time.