Top billed cast

1. 

   Liu Dongqin

   Sheng Wang

2. 

   Benjamin Tsang

   Jiang Tian

3. 

   Samuel Ku

   Zhao Xi

4. 

   Kenny Yen

   Lin Bei-ting

5. 

   Lu Tingyu

   Yang Jing 'Jenny'

6. 

   Duan Chun-hao

   Sheng Ming-yang

7. 

   Jennifer Hong

   Jiang Ou

8. 

   Yu An-shun

   Old Man Ding

9. 

   Chen Wei-min

   Mr. Zhao

10. View more

Current Season

Season 1

2024 | 12 Episodes

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

Reviews

A review by Dominic Kebre

Written by Dominic Kebre on 2026-04-06

When ”The On1y One” was announced and it was apparent that it was more or less another adaptation of the first ”Addicted” book, I wondered if the world really needed yet another series about stepbrothers. Well, maybe the world didn't really need this series, but unlike the Thai adaptation of ”Addicted”, which failed in every aspect, this one can compare to the groundbreaking series from mainland China. I would even say it is almost as good, and therefore I'm glad that it was actually made.

Sheng Weng's (Liu Dong Qin) life changes completely when he not only has to change to a sc...read the rest

Recommendations

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2. Speed and Love82%
3. Never Have I Ever80%
4. It Started With a Kiss75%
5. One Tree Hill78%
6. My Life with the Walter Boys78%
7. Love, Victor85%
8. Elle80%
9. The Secret Life of the American Teenager68%
10. The Untamed86%
11. Love is Sweet78%
12. Mid-Century Modern58%
13. The Game75%
14. Handsome Siblings78%
15. With Love61%
16. The Immortal Ascension74%
17. Sirens66%
18. High Fidelity76%
19. Tyler Perry's For Better or Worse73%
20. Meteor Garden84%

Status
Ended

Original Language
Chinese

Original Name
某某

Keywords

• high school
• stepbrother
• boys' love (bl)
• based on web novel
• sentimental
• adoring