
The On1y One is a Taiwanese BL series about two teenagers who become academic rivals. The main character is a high achiever who recently transferred to a prestigious school, where he clashes with one of the top students. At home, his father asks a new girlfriend to move in with them. Her son is the same classmate the protagonist has been competing against. As they now live together, their relationship turns even more complicated.
The entertaining rivalry between the characters creates a strong start for The On1y One. It feels exciting to watch their early feud evolve into a close relationship. Also, this series focuses on meaningful themes about adolescence. With plenty of time to develop the protagonists, their backstories and personalities are explored in depth. However, the writing gets too sloppy toward the end. The story feels incomplete since it lacks a resolution.
The On1y One Summary
Title:
某某
Series Info:
Taiwan (2024)
Genre:
High school romance
About:
The On1y One is a nice & heartwarming BL drama.
Plot

Sheng Wang is a new transfer student at Tamying High School, a prestigious academy with a long history of academic excellence. He is placed in Class A of the second year, a program for gifted students in math and science. The accelerated curriculum is demanding, and the weekly exams overwhelm Sheng Wang. He previously attended an international school in China. After moving to the country of Taiwan, Sheng Wang is behind on the school's teaching material. His teacher, Mr. He, urges him to work hard to catch up with his classmates.
Due to his easygoing nature, Sheng Wang quickly befriends his classmates in 2A. He gets along well with the outgoing Gao Tian Yang, who sits in front of him in class. Sheng Wang also meets Little Mouth Xu, the son of the school director, Big Mouth Xu. Other classmates include Little Pepper, her best friend Li Yu, Song Si Rui, and Qi Jia Ho. Like Sheng Wang, Qi Jia Ho is a transfer student who recently arrived at the school. Their friends often compare the two, praising Sheng Wang for being smarter, which annoys Qi Jia Ho.
Despite fitting in well with his classmates, Sheng Wang clashes with Jiang Tian, the serious student who sits behind him. Jiang Tian is the school's top student. This academically gifted teenager studies hard and always gets excellent grades. Naturally, Sheng Wang sees him as a competitor. Jiang Tian also has a standoffish personality, rarely showing emotion on his poker face. His seemingly arrogant attitude toward Sheng Wang leaves a poor first impression, so the two quickly become rivals.
Sheng Wang lives with his father, who frequently travels abroad for work. When Sheng Wang was a child, his mother passed away from a sudden illness. He was close to her and still misses her deeply. His father, Sheng Ming Yang, eventually starts dating a woman named Jiang Ou. Out of loyalty to his mother, Sheng Wang strongly opposes the relationship. He sees Jiang Ou as a threat to his mother's memory and dislikes her from the start. His frustration grows even more when his father asks Jiang Ou to move in with them.
Jiang Ou is a single parent raising a teenager. She and her son, Jiang Tian, move in with Sheng Wang and his father, shocking both boys when they realize their parents are dating. Besides clashing at school, they now have to live under the same roof. Their bedrooms are on the second floor, directly across from each other. At first, they try to avoid each other as much as possible. However, Sheng Wang struggles with his studies and feels conflicted about asking Jiang Tian for help. Despite his cold demeanour, Jiang Tian may not be as unfriendly as he seems.
The On1y One Trailer
The On1y One Cast
Characters
Sheng Wang
Liu Dong Qin (刘冬沁)

Sheng Wang is a transfer student at Tamying High School, placed in an advanced class for math and science. The fast-paced lessons and constant exams overwhelm him, making it hard to keep up. He clashes with Jiang Tian, the school's top student, who seems cold and distant. Their relationship worsens when his father's new girlfriend moves in, and both teenagers realize their parents are dating. Sheng Wang's mother passed away while he was young.
Liu Dong Qin

Liu Dong Qin (刘冬沁), also known as Eric, is a Chinese actor. He is born on January 9, 1994. His first BL leading role is the 2024 drama, The On1y One.
Jiang Tian
Benjamin Tsang (曾向鎮)

Jiang Tian is a brilliant but aloof student, known for his top grades and serious personality. He rarely shows emotion and keeps his distance from others, which makes his rivalry with Sheng Wang all the more intense. Their relationship becomes more complicated when Jiang Tian's mother moves in with Sheng Wang's family, forcing them to live together. While they start as rivals at school and home, Jiang Tian may not be as distant as he seems.
Benjamin Tsang

Benjamin Tsang (曾向鎮) is a Hong Kong actor. He is born on August 29, 1995. His first BL leading role is the 2024 drama, The On1y One. He also appears in short movies Boxing (2019) and A Cohabitation (2019). He appears in a short version of Kiseki (2020) before the full-length drama is remade later.
Supporting Cast

Sheng Ming Yang
Tuan Chun Hao (段鈞豪)

Jiang Ou
Jennifer Hung (洪小鈴)

Gao Tian Yang
Andy Chen (陳彥廷)

Qi Jia Ho
Tim Cheng (鄭湋曄)

Li Jia (Little Pepper)
Pipi Yao (姚愛寗)

Xu Tian Shu (Little Mouth Xu)
Jed Chung (鍾岳軒)

Li Yu
Mimi Shao (邵奕玫)

Song Si Rui
Adam Cai (蔡振廷)

Zhao Xi
Samuel Ku (古斌)

Benny (Mr. Lin)
Kenny Yen (顏毓麟)

Jenny (Ms. Yang)
Lu Ting Yu (陆婷玉)

He Jin (Mr. He)
Zach Lu (盧彥澤)

Zhao Cai (Ms. Chen)
Chen Ying Ru (陳映如)

Director Xu (Big Mouth Xu)
Sean Lin (林史恩)

Gu Yue
He Yu Chen (劉黛瑩)

Ji Huan Yu
Chris Lee (李至正)

Ding Lao Tou (Grandpa Ding)
Yu An Shun (游安順)

Zhao Lao Ban (Uncle Zhao)
Chen Wei Min (陳為民)

Ya Ba Shu (Uncle Mute)
Wu Chen Ya (吳震亞)

Pang Xie (Crab)
JN Yu (余杰恩)

Shi Yu
Stan Huang (黃丞邦)

Di Zhai Tao
Michael An (安俊朋)

PE Teacher
Jonas Chen (陳俊諺)

Geography Teacher
Yeh Ching Han (葉靜涵)

Young Sheng Wang
Yang Chun Chien (楊濬謙)

Young Jiang Tian
Liu Hsing Yv (劉星宇)

Leader
Cast Highlights
Benjamin Tsang
Jiang Tian's actor has appeared in two short gay movies, Boxing (2019) and A Cohabitation (2019). He appears in a short 2020 version of Kiseki with Shi Yu's actor (Stan Huang).
Tim Cheng
Qi Jia Ho's actor has supporting roles in My Tooth Your Love (2022) and VIP Only (2023).
Jed Chung
Little Mouth Xu's actor has appeared in the Jump the Boy! series (2020). He's the lead of the short movie Light (2021). He and Tian Yang's actor (Andy Chen) appeared in the non-BL drama, Go Fighting (2023).
Zach Lu
He Jin's actor is the star of the 2018 high school series, HIStory 2: Crossing the Line. He portrayed a student in that series. Now, he's playing a high school teacher in The On1y One.
Stan Huang
Shi Yu's actor is the star of VIP Only (2023). He also appeared in a short version of Kiseki (2020) with Benjamin Tsang, playing the lead couple.
JN Yu
Crab's actor has a supporting role in the 2021 BL series Be Loved in House.
Michael An
Di Zhao Tao's actor is the star of HIStory 4: Close to You (2021). He has also appeared in HIStory 5: Love in the Future (2022) and Kiseki: Dear to Me (2023).
Chris Lee
The actor who portrays Jiang Tian's father has a supporting role in the 2022 movie Marry My Dead Body.
Jonas Chen
The actor who portrays the PE teacher is the star of the 2024 series Bad to Bed.
The On1y One Review
Review
Drama Review Score: 7.2

The On1y One is a beloved BL drama that has captured the hearts of many fans. There are many reasons for its popularity, but one of the most enjoyable aspects is the rivalry at the beginning. The two teenage leads clash fiercely at school. From playful arguments to cheeky mischief, their lighthearted conflict is entertaining. It feels just as exciting to watch their feud turn into a friendship. With a mix of humour, tension, and heartfelt moments, The On1y One delivers a compelling enemies-to-lovers journey.
Besides the romantic arc, The On1y One focuses on many storylines about adolescence. It explores relatable topics like academic pressure, school friendships, and the complicated bond between teenagers and their parents. The family drama resonates with me the most, and some moments strike an emotional chord. Since the series is eleven hours long, it has plenty of time to develop each plot meaningfully. It also builds two well-rounded protagonists, giving them rich backstories and layered personalities. I grow attached to the characters because I understand their struggles, experiences, and personal growth.
Since their parents are dating, Sheng Wang and Jiang Tian must live in the same house. I like how they have a more intimate relationship than regular classmates. From family meals to late-night study sessions, they share many bonding moments on a personal level. Both characters are used to guarding their emotions, so it feels meaningful that they trust each other enough to become confidantes. They also inspire their partners to step outside their comfort zones. Both learn to relax and have fun together instead of always focusing on school or responsibilities.
Benjamin Tsang portrays Jiang Tian's brooding personality smoothly. Beneath his stoic persona, he lets subtle emotions reveal themselves in understated ways. His co-star (Liu Dong Qin) seems youthful despite being almost twice the age of Sheng Zhang. Unfortunately, the actor's support for police violence during the 2019 Hong Kong protests is an ugly detail that makes me hate him. Among the supporting cast, I'm fond of Gao Tian Yang's vivacious performer (Andy Chen), who steals every scene. He commands attention with his infectious enthusiasm.
Although I enjoyed The On1y One when it started, the quality drops toward the end. As the writing gets sloppier, the lack of realism breaks my immersion in the story, like a random abduction on the school campus. Dull subplots have too much focus, such as the love triangle with the teachers. Also, the series stalls Sheng Zhang and Jiang Tian's romance on purpose. It drags out their relationship drama by holding back storylines for a possible Season 2. The last four episodes feel a lot like filler, packed with obvious fluff compared to the tighter narrative previously.
Worst of all, The On1y One ends without finishing the love story. After hours of building up Sheng Wang and Jiang Tian's relationship, it stops before reaching a meaningful climax. Unless we get a second season, this ending seems awkward and unsatisfying. One of the things I love about BL dramas is that they offer a definite conclusion instead of leaving me with no closure for years. I hate waiting for an unannounced sequel that may never come in the future. Regrettably, my enthusiasm for The On1y One is limited since the romance feels incomplete.
Summary
Compelling story
The On1y One has an engaging enemies-to-lovers arc, balancing humour, tension, and heartfelt moments. The series has plenty of time to develop the characters and their emotional arcs.
Incomplete romance
After hours of building up a slow-burn relationship, this love story doesn't reach a satisfying climax. The series ends before Sheng Zhang and Jiang Tian can develop their romance further.
Moody acting
Benjamin Tsang nails the brooding role, subtly revealing Jiang Tian's emotions beneath the surface. For his co-star (Liu Dong Qin), the actor's support for police brutality overshadows his performance.
Sad ending
The On1y One has a sad ending, stopping the series at an awkward point before Sheng Zhang and Jiang Tian can get together. Season 2 hasn't been announced, so the story feels incomplete.
Polished artistry
Visually, this BL drama is well-crafted, offering sleek cinematography and polished production values. It's working with a decent budget, which shows in the quality of the final product.
72%
The On1y One hooks you with a fun rivalry, heartfelt family drama, and a compelling enemies-to-lovers arc. However, the sloppy writing in the last stretch and a lack of closure feel unsatisfying.
The On1y One Episodes
Episode Guide

- Start Date August 22, 2024
- End Date September 26, 2024
- Episodes 12 episodes
- Episode Length 50 minutes
The On1y One has a total of 12 episodes. Each episode is around 45 to 55 minutes long. The last episode is around 55 minutes long. It is a long BL drama, and you can finish the entire series in under 11 hours. The On1y One started on August 22, 2024 and ended on September 26, 2024.
The On1y One is adapted from a Chinese novel. The original story is by Mu Su Li.
The On1y One Information
Links
- Gagaoolala The On1y One Gagaoolala
- Instagram The On1y One Instagram
- MyDramaList The On1y One MyDramaList
- Wikipedia The On1y One Wikipedia
- Wikipedia 某某 Wikipedia
Director

Patrick Liu (柳廣輝) is a Taiwanese director. His portfolio of works include the 2020 BL movie, Your Name Engraved Herein. He also worked on Best Sisters Forever (2021) and The On1y One (2024).