Dive Into You is a 2026 Korean fantasy romance starring Kim Ji-yeon, better known as WJSN’s Bona, and Park Seo-ham. It premieres on September 26, 2026 and combines three high-concept ideas in one story: a body swap between twins, time travel through an old camcorder and a mission to save a first love who died in the present timeline.
The main Dive Into You cast includes Kim Ji-yeon as Yoon Ha-na, Park Seo-ham as Jung Woo-jae, Jang Se-hyuk as Yoon Ha-ru and Moon Seung-yoo as Son Ye-rang. The drama airs on Channel A in South Korea, is available through Viki for international viewers in supported regions, and is also reported for Disney+ in South Korea and Japan. Availability can vary by country.
Dive Into You at a glance
| Detail | Information |
|---|---|
| Premiere date | September 26, 2026 |
| Country | South Korea |
| Genre | Fantasy romance, body swap, time travel |
| Korean broadcaster | Channel A |
| International streaming | Viki in supported regions |
| Disney+ availability | Reported for South Korea and Japan |
| Lead cast | Kim Ji-yeon (Bona), Park Seo-ham, Jang Se-hyuk, Moon Seung-yoo |
| Central device | An old camcorder that allows the twins to travel into the past |
Who is in the Dive Into You cast?
The story revolves around four characters whose relationships look different in the present and the past. Yoon Ha-na is a famous actress, while her twin brother Yoon Ha-ru is a national-level judo athlete. Jung Woo-jae is Ha-na’s first love and later becomes her bodyguard. Son Ye-rang is connected to Ha-na’s career while also being romantically involved with Ha-ru.
Dive Into You cast and characters
| Actor | Character | Character guide |
|---|---|---|
| Kim Ji-yeon (Bona) | Yoon Ha-na | A top actress whose life changes when she swaps bodies with her twin brother and gets a chance to travel back in time. |
| Park Seo-ham | Jung Woo-jae | Ha-na’s first love, a former judo prospect who later works as her bodyguard. |
| Jang Se-hyuk | Yoon Ha-ru | Ha-na’s twin brother and a national judo athlete who becomes part of the body-swap and time-travel crisis. |
| Moon Seung-yoo | Son Ye-rang | The head of Ha-na’s agency and Ha-ru’s girlfriend, adding another relationship to the twins’ complicated present. |
What is Dive Into You about?
Yoon Ha-na appears to have the successful public life of an A-list actress, but her personal history is defined by the death of Jung Woo-jae, her first love. Woo-jae was once a promising judo athlete and later became Ha-na’s bodyguard. His death leaves a wound that the story turns into a literal second-chance premise.
After Ha-na and her twin brother Ha-ru discover that an old camcorder can take them back to the past, they use it to return to a period when Woo-jae is still alive. The complication is that Ha-na and Ha-ru have also swapped bodies. That means Ha-na may have to save the person she loves while living inside her brother’s body.
How does the body swap work?
The drama’s promotional material establishes that an accident causes Ha-na and Ha-ru’s souls to switch. The exact rules, limits and consequences of the swap are part of the story and should become clearer after the premiere. What matters before release is that the swap is not a random comedy device. It directly affects how Ha-na can approach Woo-jae when she goes back to the past.
How does the time travel work?
An old camcorder is the key object connecting the present with the past. The twins discover that they can use it to return to earlier years. Promotional images show the camcorder as a bridge between their adult lives and the period when Ha-na, Ha-ru and Woo-jae were younger.
Who is Jung Woo-jae?
Park Seo-ham’s Jung Woo-jae is Ha-na’s first love. He has a judo background and later becomes her bodyguard. The character is described as reserved and dependable, with enough athletic ability to have pursued judo seriously before his life moved in a different direction.
The emotional engine of Dive Into You is Ha-na’s attempt to prevent Woo-jae’s death. Because she knows what happened in the original timeline, every decision in the past carries the possibility of changing more than one future relationship.
Where can you watch Dive Into You?
Dive Into You premieres September 26 at 10:30 p.m. KST. It airs on Channel A in South Korea and is listed for Viki internationally in supported territories. Korean reporting also confirms Disney+ availability in South Korea, with Japan included in regional distribution reporting. Viewers should check the local service listing because streaming rights can differ by country.
Why the series stands out from a standard romance
A familiar first-love story becomes more complicated when the heroine has information from the future but cannot simply return to the past as herself. The body swap forces Ha-na to experience her relationships from a different physical and social position, while the camcorder introduces the larger question of whether a tragedy can be changed without creating another loss.
If you follow romantic mystery and high-concept streaming dramas, you can also browse our The Map of Longing cast guide and Stolen Heartbeats cast guide.
The two timelines: present day and the past
Promotional material contrasts the characters’ adult lives with an earlier period when Ha-na, Ha-ru and Woo-jae were still young. The past is not just a nostalgic backdrop. It is the point where Ha-na believes the future can be changed. That gives the story two versions of its core relationships: what the characters once felt and what years of consequences have turned those feelings into.
Why Ha-na and Ha-ru’s twin relationship matters
A body-swap story only works if the two people involved are different enough for the exchange to matter. Ha-na lives as a celebrity while Ha-ru has an elite sports background. Each has routines, obligations and relationships the other cannot perfectly imitate. Their twin bond gives them shared history, but it does not mean they automatically understand every part of each other’s adult life.
Who is Son Ye-rang?
Moon Seung-yoo plays Son Ye-rang, the head of Ha-na’s agency and Ha-ru’s girlfriend. That puts her at the intersection of both twins’ lives. A body swap could affect her professionally because she works with Ha-na and personally because she is dating Ha-ru. Her role is therefore important even though the central rescue mission focuses on Woo-jae.
Why Woo-jae’s judo background matters
Woo-jae and Ha-ru are both connected to judo, while Ha-na’s adult life belongs to entertainment. The sport gives the younger characters a shared world before fame and tragedy reshape their lives. It also supports Woo-jae’s later work as a bodyguard, making that career feel connected to skills established earlier rather than added only for romantic drama.
How many episodes will Dive Into You have?
Current Korean entertainment reporting lists the drama as a weekend series running through early November, with twelve episodes reported in current schedules. Because episode calendars can change, the release date and streaming service should be treated as firmer information than any unofficial episode-by-episode timetable.
Is Dive Into You a Viki Original or a Disney+ series?
The distribution can look confusing because different companies are involved in different markets. Viki promotes the drama internationally, Channel A broadcasts it in South Korea, and Korean reporting confirms Disney+ streaming in that market. The useful answer is regional: check Viki first outside Korea, while local Disney+ listings may apply in selected Asian territories.
FAQs
Dive Into You premieres on September 26, 2026.
Kim Ji-yeon, also known as WJSN’s Bona, plays top actress Yoon Ha-na.
Park Seo-ham plays Jung Woo-jae, Ha-na’s first love and later her bodyguard.
Jang Se-hyuk plays Yoon Ha-ru, Ha-na’s twin brother and a national-level judo athlete.
Yes. An old camcorder allows the twins to travel back into the past as they try to prevent Woo-jae’s death.
The series airs on Channel A in South Korea and is available on Viki in supported international regions. Disney+ availability is reported for South Korea and Japan.