Top 17 Highest Rated Korean Mature Novels in 2026

2026 Edition

Updated January 27, 2026

Specialized Lists

17 Novels

The mature tag in Korean web novels indicates content for adult readers. This covers darker themes, graphic violence, explicit content, or morally complex subject matter. The specifics vary by novel, so the tag alone doesn't tell you exactly what mature elements to expect.

The 4+ rating filter helps ensure quality since mature content works best when it serves strong underlying storytelling. High ratings suggest these novels use their mature elements purposefully rather than gratuitously. Check individual content warnings before starting.

1
TOP PICK
Dungeon Defense
4.5
(3.0K ratings)
Genre: action, drama, ecchi
Do you know how this world ends? Become the hero and defeat the 72 Demon Lords.
First Impressions
Dungeon Defense is a web novel that certainly sparked a lot of strong opinions, and after diving in, I can see why. It's a story about a protagonist who transmigrates into a game he's beaten, becoming the weakest demon lord, Dantalian. He has to use his wits and cunning to survive and rise in a world filled with scheming nobles and powerful enemies. Initially, I was hooked by the premise. The idea of an intelligent, manipulative main character in a fantasy setting is always appealing. The first volume seemed to set up a fascinating world of political intrigue and strategic battles, and I found...
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Completed
2
RUNNER UP
Omniscient Reader’s Viewpoint
4.6
(2.4K ratings)
Genre: action, adventure, comedy
Kim Dok-Ja does not consider himself the protagonist of his own life. Befitting the name his parents gave him, he is a solitary person whose sole hobby is reading web novels.
First Impressions
"Omniscient Reader's Viewpoint" is a wild ride, and I can definitely see why it's garnered so much attention. It’s the type of story that grabs you and refuses to let go, throwing you headfirst into a world that's both familiar and utterly bizarre. Overall, I found it a compelling read, although not without its quirks. The premise is undeniably intriguing: a lone reader, Kim Dokja, finds himself living in the world of the web novel he’s obsessed over for a decade. The world is transported to his, and he now has the immense knowledge of how it will end, or so he thinks. It's a fantastic setup t...
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3
HIGHLY RECOMMENDED
Turning
4.8
(869 ratings)
Genre: action, adult, adventure
Yuder was a commoner Omega who rose to the top with his ability. When he woke up again after being falsely accused and executed, he was back 11 years ago before everything began.
First Impressions
"Turning" is a web novel that has completely captivated me. With its intricate plot, well-developed characters, and a slow-burn romance that's worth the wait, it's easy to see why it boasts such a high rating. This isn't a quick read, but it's a deeply rewarding one. Initially, the sheer length of "Turning" was daunting. Usually, I prefer shorter stories, but something about the premise intrigued me. From the very first chapter, I was drawn into the world and the complex dynamic between Yuder and Kishiar. It's a story that requires patience, but it quickly becomes clear that it's going to be a...
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Completed
4
EDITORS CHOICE
The Second Coming of Gluttony
4.3
(2.9K ratings)
Genre: action, adventure, comedy
“The son of god Gula has returned. ” I was lost in the world of gambling.
First Impressions
I've spent some time diving into "The Second Coming of Gluttony," and it's been quite the ride. This web novel certainly has its strong points, but it's not without its flaws. It’s one of those stories that really grabs you, but also makes you scratch your head at times. Initially, I was hooked by the unique premise. The main character, Seol, starts as a complete scumbag – a gambling addict who's hit rock bottom. This isn't your typical wish-fulfillment isekai. Instead, it promises a genuine redemption arc, fueled by the bitterness of past mistakes. The initial tutorial and neutral zone segmen...
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Completed
5
EDITORS CHOICE
DASH
4.5
(561 ratings)
Genre: adult, drama, mature
Jeong Jiheon was once a promising swimmer, but retired early due to an injury and is now working diligently at a sports agency. Currently, the greatest interest in the sports market is none other than Kwon Jaekyoung, and numerous agencies are fighting fiercely behind the scenes to scout him.
First Impressions
DASH is a sports romance that dives into the complexities of relationships, self-worth, and personal growth, all set within a unique ABO world. As a reader, I found it to be a compelling and engaging story, even with its occasional slow burn pacing. Initially, I was drawn in by the premise of a story that blends sports and the omegaverse, a combination that felt refreshingly different. The fact that it's been adapted into a drama CD and manhwa also piqued my interest. I quickly found myself invested in the characters and their journeys, eager to see how their relationship would unfold....
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Completed
6
#6 PICK
Predatory Marriage
4.4
(594 ratings)
Genre: adult, drama, fantasy
Princess Leah wrote a su*cide note before her wedding. She was certain that she would die after the wedding night—a miserable end for a princess who had devoted her life to the country and the royal family.
First Impressions
"Predatory Marriage" certainly grabbed my attention with its provocative title and blend of adult romance and fantasy elements. Diving in, I was curious to see if it lived up to the hype – or the criticisms. Initially, I was a bit thrown off. The story jumps right into things, and it took me a moment to get my bearings. Some have pointed out the abruptness of the timeline shift, and I can see how that could be jarring. However, I quickly found myself intrigued by Leah, the female lead, and her desire for revenge....
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7
#7 PICK
Return of Mount Hua Sect
4.5
(448 ratings)
Genre: action, adventure, comedy
The 13th generation disciple of the Great Mount Hua Sect. One of the Three Great Swordsmen.
First Impressions
"Return of Mount Hua Sect" is a wild ride through the wuxia world, and I can definitely see why it's garnered so much love. It's a story about Chung Myung, an old ancestor reincarnated into the declining Mount Hua Sect, and his hilarious, often chaotic, journey to restore it to its former glory. Initially, I wasn't sure what to expect. The premise is familiar – reincarnation, martial arts, a fallen sect – but the execution is what sets this novel apart. It’s a blend of action, adventure, and laugh-out-loud comedy, with a surprising amount of depth lurking beneath the surface. The first few cha...
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Completed
8
#8 PICK
The Hunter’s Gonna Lay Low
4.5
(423 ratings)
Genre: action, adventure, fantasy
Hunter Cha Eui-jae, who was dispatched to seal a rift that appeared over the West Sea, was flung out as soon as he closed the rift. When he came to his senses, he was lying in a garbage dump.
First Impressions
"The Hunter's Gonna Lay Low" has been quite the ride, and I can definitely see why it's garnered so much attention, especially with the manhwa adaptation. It's a blend of action, adventure, and romance with a healthy dose of supernatural elements, all wrapped up in a post-apocalyptic package. However, like any good story, it has its strengths and weaknesses. Initially, I was drawn in by the premise – a powerful hunter trying to escape his past and live a normal life. This setup creates a great blend of comedy and underlying tension. The "secret identity" trope is used well, and the introductio...
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Completed
9
#9 PICK
Yess & Yes
4.5
(290 ratings)
Genre: adult, drama, fantasy
Lee Juwon, the corrupt CEO of the hunter service company December. Juwon, who lived viciously because he was crazy for money, was trapped all alone in a Christmas Eve dungeon that suddenly appeared.
First Impressions
"Yess & Yes" is a wild ride, a modern fantasy take on "A Christmas Carol" with a healthy dose of adult themes. It's a story that grabbed my attention from the get-go with its morally gray protagonist and intriguing premise. While it might not be for everyone, it definitely left a lasting impression on me. I was immediately drawn to the unique dynamic between Lee Juwon, our money-obsessed MC, and Kang Inheon, the seemingly devoted ML. Juwon is, to put it mildly, a piece of work. He's arrogant, stingy, and generally unpleasant. But there's a depth there that hints at past traumas, and I was eage...
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Completed
10
#10 PICK
Necromancer Survival
4.3
(350 ratings)
Genre: adventure, drama, fantasy
Sometime after ‘Gates’ appeared in this world, humanity was divided into two: [User] and [ordinary human beings] . Lee-kyung was able to awaken into a user and choose a [Class] …but, in momentary misjudgement, chose to be a [Necromancer] , the worst of all classes.
First Impressions
I've been diving into the world of "Necromancer Survival," and I have to say, it's been quite a ride. With a solid 4.3/5 rating from a good number of voters, I was curious to see what all the buzz was about. It's definitely a web novel that carves out its own niche, and whether you love it or hate it seems to depend on what you're looking for in a story. Initially, I was intrigued by the premise: a seemingly ordinary guy, Choi Yikyung, thrust into a dangerous world of dungeons and rankers with the less-than-stellar class of Necromancer. The early chapters focus heavily on world-building, estab...
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Conclusion

Korean mature novels cover various types of adult content. These 17 earned high ratings from readers who found the mature elements enhanced the stories. Know your own preferences and limits, and check individual novel descriptions for content specifics before committing to anything.

Frequently Asked Questions

Our rankings consider multiple factors: reader ratings (40%), popularity and reading lists (25%), review quality (20%), and editorial assessment (15%). We update regularly to reflect new releases and changing reader preferences.

We update our rankings monthly to ensure they reflect the latest reader ratings and new novel releases.

How We Create Our 2026 Rankings

Our 2026 novel rankings are created through a comprehensive, data-driven process that combines quantitative metrics with qualitative editorial review. Here's how we ensure our rankings reflect the best novels available today.

Data Collection

We aggregate reading data, ratings, and engagement metrics from thousands of readers across multiple platforms, updated regularly throughout 2026.

Community Input

Reader ratings and reviews form the foundation of our rankings. We weight votes based on verified reading history to ensure authenticity.

Quality Scoring

Each novel receives a composite score based on average rating, vote count, reading list additions, and reader retention metrics.

Editorial Review

Our editorial team reviews top candidates for writing quality, translation accuracy, and overall reader experience.

Regular Updates

Rankings are refreshed quarterly to reflect new releases, updated ratings, and shifting reader preferences in 2026.

Transparency

We publish our methodology openly so readers understand exactly how novels earn their positions in our rankings.

Our 2026 Ranking Criteria

40%Reader Rating Score (weighted by vote count and recency)
25%Popularity Metrics (reading list additions, active readers)
20%Engagement Score (comments, reviews, recommendations)
15%Editorial Assessment (writing quality, translation, completeness)

Last updated: January 27, 2026 | Rankings reflect data collected through 2026

Ranked Novels

Dungeon Defense

First Impressions

Omniscient Reader’s Viewpoint

First Impressions

Turning

First Impressions

The Second Coming of Gluttony

First Impressions

DASH

First Impressions

Predatory Marriage

First Impressions

Return of Mount Hua Sect

First Impressions

The Hunter’s Gonna Lay Low

First Impressions