K-Drama 
Both Night Traveler and Whale Star: The Gyeongseong Mermaid tell stories about love that is difficult or impossible because of external circumstances. In Night Traveler, the barrier is time travel, while in Whale Star, it is the harsh reality of historical conflict during the Japanese colonial era.
Both focus on emotional, slow-burn romances where characters must make sacrifices, often choosing between love and something greater, such as duty or survival. They also emphasize quiet, introspective characters and explore deeper themes beyond romance, including identity, history, and personal struggle.
Overall, the two stories are similar because they portray tragic, meaningful love shaped by forces beyond the characters’ control.
Both focus on emotional, slow-burn romances where characters must make sacrifices, often choosing between love and something greater, such as duty or survival. They also emphasize quiet, introspective characters and explore deeper themes beyond romance, including identity, history, and personal struggle.
Overall, the two stories are similar because they portray tragic, meaningful love shaped by forces beyond the characters’ control.
Similarities between Whale Star: The Gyeongseong Mermaid and Gyeongseong Creature:
-Both dramas are set in Gyeongseong during the Japanese occupation of Korea, although Whale Star takes place in 1926 while Gyeongseong Creature is set in 1945.
-Both feature characters whose lives become entangled with the harsh realities of Japanese colonial rule.
-Both incorporate themes of survival, resistance, and the struggle against oppression.
-Both feature characters caught up in dangerous circumstances that change the course of their lives.
-Both combine historical drama with darker elements, although Whale Star is a fantasy romance inspired by The Little Mermaid, while Gyeongseong Creature combines historical drama, mystery, and creature horror.
-Both explore how personal relationships and individual choices are shaped by the turbulent political circumstances of the era.
-Both dramas are set in Gyeongseong during the Japanese occupation of Korea, although Whale Star takes place in 1926 while Gyeongseong Creature is set in 1945.
-Both feature characters whose lives become entangled with the harsh realities of Japanese colonial rule.
-Both incorporate themes of survival, resistance, and the struggle against oppression.
-Both feature characters caught up in dangerous circumstances that change the course of their lives.
-Both combine historical drama with darker elements, although Whale Star is a fantasy romance inspired by The Little Mermaid, while Gyeongseong Creature combines historical drama, mystery, and creature horror.
-Both explore how personal relationships and individual choices are shaped by the turbulent political circumstances of the era.
Similarities between Whale Star: The Gyeongseong Mermaid and The Legend of the Blue Sea:
-Both dramas draw inspiration from The Little Mermaid, reimagining the classic fairy tale in a Korean setting.
-Both feature a central romance between characters from very different worlds.
-Both female leads are connected to the mermaid motif, which plays an important role in their respective love stories.
-Both stories explore love that comes with sacrifice and hardship.
-Both feature romance intertwined with danger and circumstances that threaten the relationship between the main characters.
-Both have a tragic, bittersweet undertone to their romantic storytelling, although their plots and overall tones differ.
+Both combine romance with fantastical or fairy-tale elements.
-Both dramas draw inspiration from The Little Mermaid, reimagining the classic fairy tale in a Korean setting.
-Both feature a central romance between characters from very different worlds.
-Both female leads are connected to the mermaid motif, which plays an important role in their respective love stories.
-Both stories explore love that comes with sacrifice and hardship.
-Both feature romance intertwined with danger and circumstances that threaten the relationship between the main characters.
-Both have a tragic, bittersweet undertone to their romantic storytelling, although their plots and overall tones differ.
+Both combine romance with fantastical or fairy-tale elements.
Similarities between Whale Star: The Gyeongseong Mermaid and The Idle Mermaid:
-Both dramas are inspired by The Little Mermaid fairy tale.
-Both feature a female protagonist connected to the mermaid world.
-Both explore a romance between a mermaid and a human.
-Both portray the challenges of adapting to a world different from one's own.
-Both feature love, sacrifice, and the difficulties of pursuing a relationship between two different worlds.
-Both reimagine the classic mermaid tale through their own unique storylines, blending romance with fantasy elements.
-Both dramas are inspired by The Little Mermaid fairy tale.
-Both feature a female protagonist connected to the mermaid world.
-Both explore a romance between a mermaid and a human.
-Both portray the challenges of adapting to a world different from one's own.
-Both feature love, sacrifice, and the difficulties of pursuing a relationship between two different worlds.
-Both reimagine the classic mermaid tale through their own unique storylines, blending romance with fantasy elements.
similar:
- about korean independence movement
- set in gyeongseong (japanese colonial period)
- feature love triangles
- tragic romance
- depict struggles and sacrifices of the era
different:
- FL is a maid in Whale Star whereas FL is a noble in Mr. Sunshine
- Whale Star is more character-driven, while Mr. Sunshine has a broader political scope
- about korean independence movement
- set in gyeongseong (japanese colonial period)
- feature love triangles
- tragic romance
- depict struggles and sacrifices of the era
different:
- FL is a maid in Whale Star whereas FL is a noble in Mr. Sunshine
- Whale Star is more character-driven, while Mr. Sunshine has a broader political scope
similar:
- focus on korean independence movement
- set in gyeongseong (colonial period)
- feature love triangles
- sacrifice and resistance under japanese occupation
different:
- Whale Star is purely historical, while Chicago Typewriter is a reincarnation drama where present-day characters recall past lives as independence fighters, offering stronger closure
- focus on korean independence movement
- set in gyeongseong (colonial period)
- feature love triangles
- sacrifice and resistance under japanese occupation
different:
- Whale Star is purely historical, while Chicago Typewriter is a reincarnation drama where present-day characters recall past lives as independence fighters, offering stronger closure
100 Days of Deception (2026) and Whale Star: The Gyeongseong Mermaid (2019–2021) share several striking similarities, particularly in their historical settings, female protagonists, romantic relationships, and exploration of Korea’s independence movement during Japanese colonial rule. Although 100 Days of Deception is a historical espionage romance and Whale Star is a historical romance webtoon inspired by Hans Christian Andersen’s The Little Mermaid, both stories explore how ordinary young Korean women become entangled in the struggle for their country’s liberation. Their journeys reflect the emotional and personal consequences of living under colonial oppression, where love, loyalty, survival, and sacrifice become closely intertwined.
One of their most significant similarities is their historical background. 100 Days of Deception takes place in the 1930s, primarily in Gyeongseong, modern-day Seoul, while Whale Star begins in 1926, initially following events in Gunsan before the story expands to Gyeongseong. Both works portray Korea during Japanese occupation, a period marked by political repression, inequality, and the activities of underground independence organizations. The protagonists live in a society where ordinary Korean citizens have limited freedom, and those who resist Japanese authority risk imprisonment, torture, or death. This historical environment provides the foundation for both narratives, influencing the decisions, relationships, and personal struggles of their characters.
Another important similarity is that both female protagonists come from relatively disadvantaged backgrounds and initially have little involvement in political resistance. In 100 Days of Deception, Lee Ga-kyung, portrayed by Kim You-jung, is a talented pickpocket who dreams of escaping her difficult circumstances and eventually moving to America. Her priorities initially revolve around survival and the possibility of building a better life outside Korea. However, her circumstances change when she becomes involved with the independence organization Gugukdan and is recruited to undertake a dangerous undercover mission. Similarly, in Whale Star, Heo Su-a is a seventeen-year-old handmaiden working for a wealthy household in Gunsan. Her life changes dramatically when she discovers an injured independence activist named Kang Uihyeon and secretly cares for him. What begins as a compassionate act gradually introduces her to the dangerous world of Korean resistance fighters. Neither woman originally intends to become involved in the independence movement, yet both eventually find themselves participating in struggles much greater than their personal ambitions.
Romance also plays an important role in both narratives, particularly through the heroines’ relationships with men whose backgrounds are complicated by Japanese colonial authority. In 100 Days of Deception, Ga-kyung encounters Kim Tae-woong, also known as Sato Hideo, an elite interpreter working within the Japanese colonial administration. His position as the adopted son of an influential Japanese official complicates his identity and relationships. In Whale Star, Su-a develops feelings for Kang Uihyeon, an independence activist whose family background is complicated by his father’s pro-Japanese affiliations. Although the two male characters occupy different positions within their respective stories, both introduce conflicts involving family, political loyalty, and personal identity. Their relationships with the heroines demonstrate how romantic attachments can become inseparable from the political tensions of colonial Korea.
Furthermore, both stories examine the conflict between personal happiness and patriotic responsibility. As Ga-kyung becomes increasingly involved in espionage, she must navigate a dangerous environment where trust is uncertain and maintaining her secret identity is essential to survival. Her developing relationship with Tae-woong becomes complicated by the political circumstances surrounding them. Likewise, Su-a’s feelings for Uihyeon gradually become connected to her understanding of Korea’s struggle for independence. Her experiences expose her to the sacrifices made by resistance fighters and force her to confront difficult questions concerning love, loyalty, and national liberation. In both narratives, romance is not simply a separate element of the plot but an important part of the protagonists’ emotional and ideological transformations.
The theme of sacrifice is another significant connection between the two works. In Whale Star, Su-a loses her ability to speak following a violent incident involving Song Haesu, another independence activist. This tragedy establishes a direct connection to The Little Mermaid, whose heroine sacrifices her voice, and also symbolizes the experiences of those who are silenced under oppression. Su-a’s suffering becomes central to her personal development as she struggles to understand the independence movement and her place within it. Meanwhile, in 100 Days of Deception, Ga-kyung must sacrifice her personal security and conceal her true identity while operating undercover within the colonial administration. Her mission requires considerable courage because a single mistake could expose her involvement with the resistance. Although the circumstances of their sacrifices differ, both heroines experience the loss of personal freedom as they become increasingly involved in the fight for Korea’s independence.
Despite these similarities, the two stories differ in their narrative approaches and overall atmosphere. Whale Star places greater emphasis on emotional tragedy, literary symbolism, and the devastating consequences of love and political struggle. Its reinterpretation of The Little Mermaid allows the story to explore themes of silence, longing, sacrifice, and the painful realities of the independence movement. By contrast, 100 Days of Deception adopts a more espionage-oriented narrative, focusing on undercover operations, political intrigue, hidden identities, and dangerous relationships. Ga-kyung’s one-hundred-day mission provides a central structure for the story, whereas Su-a’s journey develops through a succession of personal tragedies and encounters that transform her understanding of the world.
Ultimately, the strongest similarity between 100 Days of Deception and Whale Star: The Gyeongseong Mermaid lies in their portrayals of ordinary women whose lives are transformed by extraordinary historical circumstances. Both Lee Ga-kyung and Heo Su-a begin as young women primarily concerned with their own survival, yet their encounters with Korean independence activists gradually draw them into the political struggle against Japanese colonial rule. Through their experiences, both works emphasize that the fight for independence was not limited to prominent political leaders or trained resistance fighters, but also involved ordinary individuals who found themselves making difficult and courageous decisions. While Whale Star approaches these themes through tragedy and symbolism, 100 Days of Deception explores them through espionage and romantic suspense. Both narratives ultimately connect the personal struggles of their heroines to the broader pursuit of freedom, demonstrating how love, identity, sacrifice, and patriotism can become deeply intertwined during periods of national oppression.
One of their most significant similarities is their historical background. 100 Days of Deception takes place in the 1930s, primarily in Gyeongseong, modern-day Seoul, while Whale Star begins in 1926, initially following events in Gunsan before the story expands to Gyeongseong. Both works portray Korea during Japanese occupation, a period marked by political repression, inequality, and the activities of underground independence organizations. The protagonists live in a society where ordinary Korean citizens have limited freedom, and those who resist Japanese authority risk imprisonment, torture, or death. This historical environment provides the foundation for both narratives, influencing the decisions, relationships, and personal struggles of their characters.
Another important similarity is that both female protagonists come from relatively disadvantaged backgrounds and initially have little involvement in political resistance. In 100 Days of Deception, Lee Ga-kyung, portrayed by Kim You-jung, is a talented pickpocket who dreams of escaping her difficult circumstances and eventually moving to America. Her priorities initially revolve around survival and the possibility of building a better life outside Korea. However, her circumstances change when she becomes involved with the independence organization Gugukdan and is recruited to undertake a dangerous undercover mission. Similarly, in Whale Star, Heo Su-a is a seventeen-year-old handmaiden working for a wealthy household in Gunsan. Her life changes dramatically when she discovers an injured independence activist named Kang Uihyeon and secretly cares for him. What begins as a compassionate act gradually introduces her to the dangerous world of Korean resistance fighters. Neither woman originally intends to become involved in the independence movement, yet both eventually find themselves participating in struggles much greater than their personal ambitions.
Romance also plays an important role in both narratives, particularly through the heroines’ relationships with men whose backgrounds are complicated by Japanese colonial authority. In 100 Days of Deception, Ga-kyung encounters Kim Tae-woong, also known as Sato Hideo, an elite interpreter working within the Japanese colonial administration. His position as the adopted son of an influential Japanese official complicates his identity and relationships. In Whale Star, Su-a develops feelings for Kang Uihyeon, an independence activist whose family background is complicated by his father’s pro-Japanese affiliations. Although the two male characters occupy different positions within their respective stories, both introduce conflicts involving family, political loyalty, and personal identity. Their relationships with the heroines demonstrate how romantic attachments can become inseparable from the political tensions of colonial Korea.
Furthermore, both stories examine the conflict between personal happiness and patriotic responsibility. As Ga-kyung becomes increasingly involved in espionage, she must navigate a dangerous environment where trust is uncertain and maintaining her secret identity is essential to survival. Her developing relationship with Tae-woong becomes complicated by the political circumstances surrounding them. Likewise, Su-a’s feelings for Uihyeon gradually become connected to her understanding of Korea’s struggle for independence. Her experiences expose her to the sacrifices made by resistance fighters and force her to confront difficult questions concerning love, loyalty, and national liberation. In both narratives, romance is not simply a separate element of the plot but an important part of the protagonists’ emotional and ideological transformations.
The theme of sacrifice is another significant connection between the two works. In Whale Star, Su-a loses her ability to speak following a violent incident involving Song Haesu, another independence activist. This tragedy establishes a direct connection to The Little Mermaid, whose heroine sacrifices her voice, and also symbolizes the experiences of those who are silenced under oppression. Su-a’s suffering becomes central to her personal development as she struggles to understand the independence movement and her place within it. Meanwhile, in 100 Days of Deception, Ga-kyung must sacrifice her personal security and conceal her true identity while operating undercover within the colonial administration. Her mission requires considerable courage because a single mistake could expose her involvement with the resistance. Although the circumstances of their sacrifices differ, both heroines experience the loss of personal freedom as they become increasingly involved in the fight for Korea’s independence.
Despite these similarities, the two stories differ in their narrative approaches and overall atmosphere. Whale Star places greater emphasis on emotional tragedy, literary symbolism, and the devastating consequences of love and political struggle. Its reinterpretation of The Little Mermaid allows the story to explore themes of silence, longing, sacrifice, and the painful realities of the independence movement. By contrast, 100 Days of Deception adopts a more espionage-oriented narrative, focusing on undercover operations, political intrigue, hidden identities, and dangerous relationships. Ga-kyung’s one-hundred-day mission provides a central structure for the story, whereas Su-a’s journey develops through a succession of personal tragedies and encounters that transform her understanding of the world.
Ultimately, the strongest similarity between 100 Days of Deception and Whale Star: The Gyeongseong Mermaid lies in their portrayals of ordinary women whose lives are transformed by extraordinary historical circumstances. Both Lee Ga-kyung and Heo Su-a begin as young women primarily concerned with their own survival, yet their encounters with Korean independence activists gradually draw them into the political struggle against Japanese colonial rule. Through their experiences, both works emphasize that the fight for independence was not limited to prominent political leaders or trained resistance fighters, but also involved ordinary individuals who found themselves making difficult and courageous decisions. While Whale Star approaches these themes through tragedy and symbolism, 100 Days of Deception explores them through espionage and romantic suspense. Both narratives ultimately connect the personal struggles of their heroines to the broader pursuit of freedom, demonstrating how love, identity, sacrifice, and patriotism can become deeply intertwined during periods of national oppression.
Snowdrop (2021) and Whale Star: The Gyeongseong Mermaid (2019) share several similarities. Both are tragic historical romances set during turbulent periods in Korean history, exploring political oppression, forbidden love, betrayal, and sacrifice.
In both stories, an innocent young woman helps a wounded, mysterious man and becomes entangled in a dangerous political conflict. Eun Young-ro shelters Lim Soo-ho in Snowdrop, while Heo Su-a rescues independence fighter Kang Uihyeon in Whale Star. Their relationships bring love but also heartbreaking consequences.
The main difference is their historical setting: Whale Star takes place in 1926 during Japanese colonial rule, while Snowdrop takes place in 1987 under South Korea’s military dictatorship.
Ultimately, both stories explore how love and innocence can be destroyed by political violence, and how personal sacrifice becomes intertwined with the struggle for freedom.
In both stories, an innocent young woman helps a wounded, mysterious man and becomes entangled in a dangerous political conflict. Eun Young-ro shelters Lim Soo-ho in Snowdrop, while Heo Su-a rescues independence fighter Kang Uihyeon in Whale Star. Their relationships bring love but also heartbreaking consequences.
The main difference is their historical setting: Whale Star takes place in 1926 during Japanese colonial rule, while Snowdrop takes place in 1987 under South Korea’s military dictatorship.
Ultimately, both stories explore how love and innocence can be destroyed by political violence, and how personal sacrifice becomes intertwined with the struggle for freedom.
