About The On1y One
When their parents marry, two high school students become stepbrothers and navigate their relationship, turning from enemies into something more special.
- Status
- Ended
- TMDB rating
- 8.7/10 from 31 votes
- Seasons
- 1
- Episodes
- 12
Seasons and episodes
The latest season with aired episodes is shown first. Specials are kept separate.
Latest aired season
Season 1
Beginning: You’re Not My Brother
When Sheng Wang unexpectedly becomes Jiang Tian's stepbrother and classmate, both of their lives are suddenly thrown into disarray.
TMDB 9.2/10 from 11 votes
Closer: It’s Only 4 Lips Touching Together
As Sheng Wang and Jiang Tian awkwardly start living under the same roof, an unexpected encounter at school leaves them both flustered.
TMDB 8.6/10 from 7 votes
Actually: We Can Give It a Go
Sheng Wang's attitude towards his stepmom drives a rift between him and Jiang Tian, but an impulsive night out brings them closer.
TMDB 9.6/10 from 5 votes
Splendor: At the End of the World
From home to school, Sheng Wang and Jiang Tian learn to cherish each other's support and company. Meanwhile, tender feelings begin to emerge.
TMDB 9.7/10 from 7 votes
Closed: Waiting for the Wind
After discovering that someone beat up his bullies, Sheng Wang is caught off guard by Jiang Tian's abrupt decision to move away.
TMDB 9.7/10 from 6 votes
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.
TMDB 10.0/10 from 6 votes
Belonging: Let’s Live on Campus
Sheng 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.
TMDB 9.8/10 from 6 votes
Sparkle: Teenagers
Sheng 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.
TMDB 9.7/10 from 6 votes
Naked: The Blossom of Youth
Sheng Wang and Jiang Tian deliver impressive performances during their school's field day — until an unexpected injury lands one of them in trouble.
TMDB 9.8/10 from 6 votes
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.
TMDB 9.8/10 from 6 votes
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.
TMDB 9.7/10 from 6 votes
New Beginning: Pain is Necessary for Rebirth
While Sheng Wang juggles school and his growing feelings for Jiang Tian, a crucial test will determine whether they can stay in the same class.
TMDB 9.8/10 from 6 votes
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