The On1y One

Synopsis

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

First Air Date: 2024-08-22

Last Air Date: 2024-09-26

Number of Seasons: 1

Number of Episodes: 12

Created By: Mu Suli, Liu Kuang-Hui

Networks: Netflix, Tencent Video, GagaOOLala, iQIYI

View Technical Specifications on IMDb

Top Cast

Liu Dongqin as Sheng Wang
Benjamin Tsang as Jiang Tian
Samuel Ku as Zhao Xi
Kenny Yen as Lin Bei-ting
Lu Tingyu as Yang Jing 'Jenny'
Duan Chun-hao as Sheng Ming-yang
Jennifer Hong as Jiang Ou
Yu An-Shun as Old Man Ding
Chen Wei-Min as Mr. Zhao
Andy Chen as Gao Tianyang

Seasons

Season 1 (2024)

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

Episodes:

Ep. 1: Beginning: You’re Not My Brother (2024-08-22)

When Sheng Wang unexpectedly becomes Jiang Tian's stepbrother and classmate, both of their lives are suddenly thrown into disarray.
Ep. 2: Closer: It’s Only 4 Lips Touching Together (2024-08-22)

As Sheng Wang and Jiang Tian awkwardly start living under the same roof, an unexpected encounter at school leaves them both flustered.
Ep. 3: Actually: We Can Give It a Go (2024-08-28)

Sheng Wang's attitude towards his stepmom drives a rift between him and Jiang Tian, but an impulsive night out brings them closer.
Ep. 4: Splendor: At the End of the World (2024-08-29)

From home to school, Sheng Wang and Jiang Tian learn to cherish each other's support and company. Meanwhile, tender feelings begin to emerge.
Ep. 5: Closed: Waiting for the Wind (2024-09-04)

After discovering that someone beat up his bullies, Sheng Wang is caught off guard by Jiang Tian's abrupt decision to move away.
Ep. 6: Plan : When to Open for Business? (2024-09-05)

A parent–teacher meeting becomes a burden for Sheng Wang and Jiang Tian. Later, teachers summon them both to face their bullies.
Ep. 7: Belonging: Let’s Live on Campus (2024-09-11)

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.
Ep. 8: Sparkle: Teenagers (2024-09-12)

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.
Ep. 9: Naked: The Blossom of Youth (2024-09-18)

Sheng Wang and Jiang Tian deliver impressive performances during their school's field day — until an unexpected injury lands one of them in trouble.
Ep. 10: Thief: Who Crossed the Boundary? (2024-09-19)

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.
Ep. 11: Kiss: It’s Only 4 Lips Touching Together? (2024-09-25)

Sheng Wang advances to the next round of an English contest with Jiang Tian. Later, he accidentally witnesses a private moment between two teachers.
Ep. 12: New Beginning: Pain is Necessary for Rebirth (2024-09-26)

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.