S01E01 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.
The On1y One
S01E04: 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.
Overview
When their parents marry, two high school students become stepbrothers and navigate their relationship, turning from enemies into something more special.
Episodes
S01E02 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.
S01E03 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.
S01E04 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.
S01E05 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.
S01E06 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.
S01E07 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.
S01E08 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.
S01E09 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.
S01E10 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.
S01E11 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.
S01E12 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.
Cast
Liu Dongqin
Sheng Wang
Benjamin Tsang
Jiang Tian
Samuel Ku
Zhao Xi
Kenny Yen
Lin Bei-ting
Lu Tingyu
Yang Jing 'Jenny'
Duan Chun-hao
Sheng Ming-yang
Jennifer Hong
Jiang Ou
Yu An-Shun
Old Man Ding
Chen Wei-Min
Mr. Zhao
