Dear X K-Drama Introduction
Some K-dramas make you fall in love with their characters. Dear X does almost the opposite—it makes you question whether you should trust them at all.
Released in 2025, Dear X is a dark melodrama and psychological thriller centred on Baek Ah-jin, a hugely successful actress whose polished public image hides a much more complicated and ruthless personality. The series stars Kim Yoo-jung, Kim Young-dae, Kim Do-hoon and Lee Yul-eum and was released as a 12-episode TVING original.
The main attraction is undoubtedly Kim Yoo-jung, who takes on a dramatically darker role than many viewers may expect from her previous work. Rather than presenting a straightforward heroine, Dear X builds its story around an antihero whose past, ambition and relationships gradually reveal different sides of her personality.
Based on the popular Naver webtoon by Ban Ji-un, the drama mixes romance, revenge, manipulation, fame and psychological tension.
If you're searching for an honest Dear X K-drama review, this series is worth discussing not simply as another Korean thriller, but as a character study about how trauma, ambition and the desire for power can shape a person.
IMDB Rating: 7.6/10
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Dear X Story and Plot
At the centre of the story is Baek Ah-jin, a woman who has risen from an extremely troubled childhood to become one of Korea's biggest stars.
Her glamorous life is almost the complete opposite of her childhood. Ah-jin grew up surrounded by violence and neglect, experiences that taught her to hide her emotions and carefully observe the people around her. As she grows older, those survival skills become tools she uses to influence and manipulate others.
Her beauty and talent help her build a successful career, but the people closest to her gradually discover that the woman they see in public is not necessarily the real Ah-jin.
One of the most important people in her life is Yoon Jun-seo, who has known her since childhood. His feelings for Ah-jin are deep enough that he repeatedly chooses to protect her, even when doing so means getting dangerously close to her darker side.
Then there is Kim Jae-oh, another person whose life becomes closely connected with Ah-jin. His own traumatic past creates a complicated bond between them.
The drama moves between Ah-jin's childhood, adolescence and adult life, showing how different experiences contribute to the person she eventually becomes. This structure allows the audience to see not just what she does, but also the circumstances surrounding her transformation.
Importantly, Dear X does not turn into a simple story of “good versus evil.” It keeps asking a more uncomfortable question: Is a person born cruel, or can a brutal environment help create one?
Dear X Cast and Characters
Kim Yoo-jung as Baek Ah-jin
Kim Yoo-jung is the heart of the series as Baek Ah-jin.
Ah-jin is beautiful, intelligent and extremely ambitious. She knows how to present exactly the version of herself that other people want to see. Behind that carefully constructed image, however, lies someone capable of making cold decisions when her ambitions or security are threatened.
The role gives Kim Yoo-jung the opportunity to move away from the softer romantic characters associated with some of her earlier projects. The official cast material presents Ah-jin as a woman whose appearance hides her cruelty and whose ambition is closely connected to her troubled past.
Kim Young-dae as Yoon Jun-seo
Yoon Jun-seo, played by Kim Young-dae, is one of the most emotionally complicated figures in the story.
He has been connected to Ah-jin since childhood and becomes the person most willing to stand beside her. His relationship with her is driven by love, loyalty and a desire to protect her, but the drama gradually questions how far that loyalty can go.
Kim Do-hoon as Kim Jae-oh
Kim Do-hoon plays Kim Jae-oh, another important figure in Ah-jin's life.
Jae-oh understands some of Ah-jin's pain because he has experienced abuse himself. That shared history makes his connection with her different from Jun-seo's relationship with her.
Lee Yul-eum as Re-na
Lee Yul-eum plays Re-na, a top actress and former idol whose career and personal relationships become intertwined with Ah-jin's rise.
Her presence adds another layer to the drama's exploration of competition, fame and jealousy within the entertainment industry.
Dear X Performance and Acting
This is where the series makes its biggest impression.
Kim Yoo-jung's performance as Baek Ah-jin is the major reason to watch Dear X. The character requires her to switch between warmth, vulnerability, charm and cold calculation without making those transitions feel like completely different people.
Several critics have singled out her performance. India Today gave the series 3.5/5 and praised both Kim Yoo-jung and Kim Young-dae, particularly highlighting the intensity of Yoo-jung's portrayal.
Kim Young-dae also gets a role that is less dependent on conventional romantic charm. Jun-seo is essentially caught between affection for Ah-jin and the growing realization that protecting her may not mean saving her.
Kim Do-hoon brings another emotional dimension through Jae-oh, whose connection with Ah-jin is rooted in shared suffering.
The supporting cast is also important because the story needs believable relationships around Ah-jin. Without those characters, her manipulation and emotional isolation would not have the same impact.
Direction and Screenplay
Dear X is directed by Lee Eung-bok and Park So-hyun, with Choi Ja-won and Ban Ji-un credited as writers by CJ ENM's official drama page. The series is based on Ban Ji-un's webtoon.
Lee Eung-bok is an experienced director whose previous work includes major Korean dramas, and his approach here is noticeably darker.
One of the strengths of the screenplay is that it does not reveal every part of Ah-jin's personality immediately. The audience gets pieces of information over time, allowing her history and relationships to change the way earlier events are understood.
The adaptation also makes room for psychological material surrounding the supporting characters. Forbes reported that the adaptation follows the webtoon's main plot and character flow while adding psychological complexity and original material, particularly in the later adult timeline.
The pacing is not designed like a conventional romantic K-drama. Viewers expecting constant cute moments or a traditional love story may find the series considerably darker.
Genre and Themes
Dear X sits comfortably between several genres:
- Psychological thriller
- Melodrama
- Romance
- Mystery
- Revenge drama
The central themes include trauma, manipulation, ambition, revenge, fame, emotional dependence and survival.
The entertainment industry is particularly important because Ah-jin's public image becomes almost another character in the story. She understands that fame depends not only on talent but also on controlling how other people perceive you.
The drama also explores the difference between understanding someone's past and excusing their actions. Knowing what happened to Ah-jin does not automatically make everything she does acceptable.
That moral uncertainty is one of the most interesting aspects of the show.
Music, Cinematography and Visual Style
The visual presentation of Dear X supports its darker psychological tone rather than turning the series into a conventional glossy romance.
The production information lists Gaemi as the music director/composer, while the production involves Monster Union and Siwoo Company, with Studio Dragon involved in planning.
The contrast between Ah-jin's glamorous public life and the darkness surrounding her private history is particularly important to the show's visual identity.
India Today also noted the documentary-style opening, minimalist score, transitions and wide compositions, arguing that these choices reinforce the emotional distance surrounding the characters.
Dear X Release Date and Series Details
| Detail | Information |
|---|---|
| Title | Dear X |
| Original Title | ì¹œì• í•˜ëŠ” X |
| Release Year | 2025 |
| Release Date | November 6, 2025 |
| Final Episode | December 4, 2025 |
| Country | South Korea |
| Language | Korean |
| Genre | Melodrama, Romance, Mystery/Thriller |
| Episodes | 12 |
| Director | Lee Eung-bok, Park So-hyun |
| Writers | Choi Ja-won, Ban Ji-un (original webtoon) |
| Production | Monster Union, Siwoo Company |
| Planned By | Studio Dragon |
| Network/Original Platform | TVING |
| Main Cast | Kim Yoo-jung, Kim Young-dae, Kim Do-hoon, Lee Yul-eum |
| Approx. Episode Runtime | Around 60 minutes |
| Age Rating | Adult-oriented/R-rated listing varies by platform |
CJ ENM officially lists Dear X as a 12-episode mystery/thriller and romance drama, with the original Korean release running from November 5/6 through December 13/4 depending on whether the listing reflects release scheduling conventions; Viki and other major listings identify the broadcast run as November 6 to December 4, 2025. For reader clarity, November 6–December 4 is the commonly listed episode-release period.
Dear X Trailer Review
The promotional material for Dear X makes its intentions clear very quickly.
Instead of presenting Baek Ah-jin as a conventional romantic lead, the trailers emphasize the contrast between her beautiful public image and the darker person underneath. One teaser focuses on her ambition to reach the highest point while anonymous voices question whether the personality she shows others is genuine.
The highlight trailer further introduces the people caught in Ah-jin's orbit, including Jun-seo, Jae-oh and Re-na. Their relationships suggest that the story will be driven as much by emotional manipulation as by conventional mystery.
The trailer succeeds because it doesn't sell Dear X as a standard romance. It promises a much darker story where love and loyalty can become dangerous.
Dear X OTT and Streaming Details
For viewers in India and many international markets, Dear X is available on Rakuten Viki.
Viki's current listing shows all 12 episodes, with English and multiple other subtitle options.
Viki's official cast feature also confirms that Dear X is streaming there with English subtitles. IMDb's external-site information lists Viki availability across the Americas, Europe, Oceania and India.
The series originally premiered through TVING in South Korea. International distribution varied by region: Forbes reported Viki for the Americas and Europe, HBO Max for the Asia-Pacific region and Disney+ for Japan.
Therefore, viewers should check their local platform catalogue because streaming rights can differ by country.
What Works in Dear X
1. Kim Yoo-jung's Transformation
The lead performance is the biggest attraction. She gets a challenging character and avoids making Ah-jin feel like a straightforward villain.
2. A Different Kind of Female Lead
Ah-jin is not written to be easily liked. That makes the drama more unpredictable than a conventional romance.
3. Strong Psychological Element
The series spends considerable time examining how trauma, fear and ambition affect the way people treat one another.
4. Complicated Relationships
Jun-seo and Jae-oh are not simply romantic accessories. Their connections with Ah-jin are central to understanding her character.
5. Stylish Presentation
The dark atmosphere, controlled visuals and restrained musical approach help create a consistent thriller mood. India Today specifically praised the show's visual choices and minimalist score.
What May Not Work
1. It Is Extremely Dark
This is not a comfortable K-drama. Violence, abuse, manipulation and emotionally disturbing situations are central to the story.
2. Ah-jin Can Be Difficult to Root For
The series deliberately makes its central character morally troubling. Viewers who need a sympathetic protagonist may struggle to connect with her.
3. Emotional Exhaustion
The constant darkness can become heavy, particularly because the drama rarely offers the kind of relief commonly found in romantic K-dramas.
4. Some Supporting Characters Have Less Space
With only 12 episodes and a story spanning different stages of Ah-jin's life, some supporting characters inevitably receive less development than the central trio.
These are not necessarily failures of the show; in several cases, they are consequences of the deliberately bleak storytelling style.
Who Should Watch Dear X?
You should consider Dear X if you enjoy:
- Dark K-dramas
- Psychological thrillers
- Female antiheroes
- Revenge stories
- Complex romantic relationships
- Mystery and character-driven dramas
- Korean dramas based on webtoons
- Stories about fame and manipulation
However, if your ideal K-drama is a light romantic comedy with lovable characters and a feel-good ending, Dear X is probably not the right choice.
Dear X Review: Final Verdict
After looking at the complete series, Dear X stands out because it refuses to make its central character easy to understand.
Baek Ah-jin is fascinating precisely because the drama does not give viewers a simple answer about her. Her childhood helps explain the person she becomes, but the series still makes her responsible for the choices she makes later.
Kim Yoo-jung is the biggest reason the character works. She successfully balances Ah-jin's public charm with the colder personality hidden underneath. Kim Young-dae and Kim Do-hoon provide important emotional counterpoints, while the screenplay gradually expands the story beyond a simple revenge plot.
The drama's biggest limitation is also its greatest strength: it is relentlessly dark. There are few easy emotional escapes, and viewers looking for conventional romance may find the experience uncomfortable.
Critics were generally positive about the performances and atmosphere, although some reviews noted that the show's absolute darkness could distance viewers emotionally. India Today rated it 3.5/5, while Viki's current user score is 8.9/10 from more than 31,000 ratings.
Overall Rating: 4/5 ⭐
Final Verdict: Dear X is a gripping psychological K-drama powered by a standout Kim Yoo-jung performance, complicated relationships and a deliberately unsettling story. It is not a typical romance, and that's exactly what makes it worth watching.
Frequently Asked Questions About Dear X K-Drama
1. What is Dear X K-drama about?
Dear X is a dark Korean melodrama and psychological thriller about Baek Ah-jin, a successful actress whose beautiful public image hides a manipulative and ruthless side shaped by her traumatic past.
2. Who is the female lead in Dear X?
Kim Yoo-jung plays Baek Ah-jin, the central character of the drama. Her performance is one of the show's biggest attractions.
3. Who is the male lead in Dear X?
Kim Young-dae plays Yoon Jun-seo, a man who has known Ah-jin since childhood and remains deeply connected to her despite her increasingly troubling behaviour.
4. How many episodes does Dear X have?
Dear X has 12 episodes. Viki's current listing also confirms that all 12 episodes are available.
5. When was Dear X released?
The drama premiered on November 6, 2025, and its final episode was released on December 4, 2025.
6. Where can I watch Dear X online?
Dear X is currently available on Rakuten Viki in supported regions, including India according to current streaming listings.
7. Is Dear X based on a webtoon?
Yes. Dear X is adapted from the Naver webtoon of the same name by Ban Ji-un.
8. What genre is Dear X?
Dear X combines melodrama, romance, mystery and psychological thriller elements.
9. Is Dear X worth watching?
Yes, especially if you enjoy dark psychological K-dramas, morally complicated characters and revenge-driven stories. However, viewers looking for a light romance may find its tone too disturbing.
10. Is Dear X a romantic K-drama?
Romance is part of the story, but Dear X is not a conventional romantic K-drama. Its relationships are closely connected to manipulation, trauma, loyalty, revenge and psychological conflict.
11. Who directed Dear X?
Dear X was directed by Lee Eung-bok and Park So-hyun.
12. Is there a Dear X Season 2?
A second season should not be assumed. The original drama was produced as a 12-episode series, and no confirmed Season 2 announcement is established by the official CJ ENM listing used for this review.