Mystery Manga Online | MangaNato

Killer Whale Protocol

As an intern at a marine research institute, Hyo-Seo finds himself overworked and overlooked. He's given the job no one else wants: caring for the aggressive orca everyone else fears. Hyo-Seo finds quiet comfort in the beast's presence, but after he starts speaking to it, strange things begin happening at the facility... (Source: Manta)

Behind the Lens

New York. Private investigator Noah Yoon, while investigating a fraud at WPC, loses control when the charismatic CEO Egon Wagner enters his life. Meanwhile, Mason, his lifelong best friend secretly in love with him, sees the danger and decides to fight for Noah’s heart

Shinigami ni Sodaterareta Shoujo wa Shikkoku no Tsurugi wo Mune ni Idaku

Olivia is just a baby when the mysterious Z finds her at a temple in the depths of the Forest of No Return. From that day on, the temple becomes her home and Z her family. Z, a god of death, educates her in the ways of the world, in combat, and in the long-forgotten arts of magic—right up until the day Z disappears. Olivia leaves the forest for the first time in search of Z with its ebony blade in hand. Out in the wider world, all is not well. A bitter war rages between the Asvelt Empire and the Kingdom of Fernest, and Fernest is losing badly. When Olivia shows up on Fernest’s doorstep with a sack of imperial heads looking to volunteer, the royal army happily welcomes her into its ranks. Thanks to Z’s training, she quickly proves herself as a ferocious warrior. In fact, she might be just what Fernest needs to turn the tide of the war...but will they accept her lack of people skills and disregard for discipline? And will she ever see Z again?

Shiokaze to Ryuu no Sumika

Transport yourself to a remote town where mystical dragon folk live among humans.<br> <br> After the passing of her father, Mizuka goes to live with her uncle in a seaside town. Mizuka is determined to embrace her new life, but she finds herself in the mysterious circumstance of living with a boy who turns out to be part dragon!<br> <br> (Source: Viz Media)<br> <br> <i>Note: The series ranked #5 in the 2026 Kono Manga ga Sugoi! list of top manga for female readers.</i><br> <br> <a target="_blank" rel="noopener noreferrer" href="https://www.cmoa.jp/title/315036/">https://www.cmoa.jp/title/3150...</a>

The Little Girl Raised by Death Holds the Sword of Death Tightly

Olivia is picked up by a death god, Z, deep in the forest as a child and trained by him in combat for reasons unknown. One day, Z disappears, leaving behind a letter instructing Olivia to head to the Kingdom along with a sword bearing the qualities of a death god's weapon. Thus, the girl lacking in common sense, knowledge, and normalcy sets off to join the army.

Passion (LEE Sun)

Struggling photographer Kim Soo-hyun is drowning his sorrows in the park one night when he finds himself confronted by a beautiful young woman insisting he allow her to model for him. Eventually, he accepts, but before long he comes to discover the dark secrets she is hiding… Official Webtoon: MrBlue Official Translation: English

Let's Make Saving a Habit

The man who raised me as his own daughter was murdered. Deciding to use my save&reload ability, I turned back time to a previous safe point. The problem is, out of my four time slots, he’s only alive in the one where I’m seven. Welp, it is what it is. Repeating some life is no biggie, so let’s start over. Elysion, giving off a weird vibe, pulled me aside. He’d been a close friend even pre-reset. Is this happening? [Overwriting Time Slot 1 with current point.] “I love you, Tania. I’ve liked you for a long time.” “Ah, I’m finally getting a confession…!” Overcome with excitement, I immediately loaded the save point so I could hear his confession again. [Time Slot 1 Loaded.] [Time Slot 1 Loaded.] [Time Slot 1 Load…] [Time Slot 1 …….] I’m not sure how many times I replayed his confession. Elysion’s face turned so red that it looked about ready to burst; he parted his lips with a troubled look. “Tania. If you want, I can tell you as many times as you’d like, but could you at least give me an answer to my confession first?” “What…?” Shockingly, he remembered everything I did. Instantly, everything I’d done in front of him flashed through my mind. Like, I would often look at his face, muttering to myself about how handsome he was. And how every time I wanted to see him, I would go up to him and touch him, making him distressed. And most importantly, how I had just turned back the clock by twelve freaking years just because I wanted to. I really didn’t think he would end up remembering all of that. **Original Webtoon:** [KakaoPage](https://page.kakao.com/content/69138565), [Daum](https://webtoon.kakao.com/content/%EC%84%B8%EC%9D%B4%EB%B8%8C%EB%A5%BC-%EC%83%9D%ED%99%9C%ED%99%94%ED%95%A9%EC%8B%9C%EB%8B%A4/4853)

Tensei-saki wa Korosareru Hazu no Mobu Reijou deshita: Mishiranu Koujaku-sama to no Konyaku wa Souteigai desu

“Can you entertain me?&quot;<br> <br> Lydia, the countess who was reincarnated in the romance novel she read in her previous life.<br> <br> In order to change the fate of being killed by her &quot;villain&quot; fiancé, she decides to ask for help from a hostile secret society. The game begins with the leading royalist duke Liage, who appeared as a negotiator, but... When I realized, I was engaged to him!?<br> <br> A ruthless strategist who wears the face of an orthodox hero is obsessed with a mystery ──?<br> <br> Mob young lady who wants to avoid death × The mysterious duke who controls the country in the behind-the-scenes organization dangerous contract love fantasy!<br> <br> <a target="_blank" rel="noopener noreferrer" href="https://www.cmoa.jp/title/342764/">https://www.cmoa.jp/title/3427...</a>

Imperfect Sisters

High schooler Sohee Ryu once suffered through a debilitating illness as a child, but she has since recovered and now lives a relatively normal life. The same cannot be said for her younger sister, Ayoung, who remains chronically ill. While Ayoung is deeply devoted to her older sister, Sohee finds her sister’s constant presence increasingly suffocating. <br> <br> Following a single unsettling incident, the bond between them begins to splinter, leaving the two trapped in a web of growing tension and unease.<br> <br> <b>Original Webtoon:</b> <br> <a href="https://comic.naver.com/webtoon/list?titleId=850656" target="_blank" rel="noopener noreferrer">Naver Webtoon</a>, <a href="https://series.naver.com/comic/detail.series?productNo=14142629" target="_blank" rel="noopener noreferrer">Naver Series</a>

Passion (LEE Sun)

Struggling photographer Kim Soo-hyun is drowning his sorrows in the park one night when he finds himself confronted by a beautiful young woman insisting he allow her to model for him. Eventually, he accepts, but before long he comes to discover the dark secrets she is hiding…<br> <br> Official Webtoon: <a href="http://www.mrblue.com/section_webtoon/detail.asp?pid=wt_passion_wz" target="_blank" rel="noopener noreferrer">MrBlue</a> <br> Official Translation: <a href="http://www.spottoon.com/book/85/PASSION_" target="_blank" rel="noopener noreferrer">English</a>

Our Incomplete Bond

“Sis, we’re each other’s only ‘sisters,’ right?” Ryu So-hee is a high school girl who was very sick as a child but has since recovered and now lives a seemingly normal life. She has a younger sister, Ryu A-young, who is still ill. A-young dotes on and clings to her older sister, but So-hee gradually begins to feel weighed down by this. After a certain incident, the relationship between the two starts to crack, and the once‑close sisters grow increasingly awkward and uncomfortable around each other. Within a family hiding dark secrets, a cruel mystery–thriller about two sisters unfolds.

Metropolitan Supremacy

In the aftermath of a car accident, Yang Ning has inexplicably gotten a set of abilities. He seems to have entered a game-like system. In the real world, there are attributes and tasks, warehouses and shops, and the ability to identify and view information on antiques. He used this ability to get into the antiques market and gain dominance in it. What else will he do? Oh, pretty girl, come and buy my wares! I promise i won't cheat you! Maybe? Shut up, system! Don't you dare cheat me too!

Whispering Tiger

After receiving a scathing text from his roommate, Geon-Pil is puzzled but unperturbed when said roommate returns radically changed. The new “Yeon-Seung,” driven by a primal, insatiable hunger, takes his friends-with-benefits relationship with Geon-Pil to the extreme to sate himself. As their physical encounters grow increasingly intense and feral, Geon-Pil slowly realizes that something is amiss. Even as whispers of danger warn him to back off, Geon-Pil finds himself growing comfortable with this strangely honest, dangerous new version of his partner… who just might devour him whole. (Source: Tappytoon)

I Randomly Have a New Career Every Week

I Look Too Much Like The Boss And The World Actually Believes It

Moon king, Su Liang! The invincible youth who commands the Moon God Flash Butterfly—a divine entity capable of rewinding time and reversing the laws of yin and yang—to reign supreme over this world! To think I’d transmigrate here and get handed such an overpowered identity card… a heavenly golden finger from the start, right? WRONG! The beast inside me isn’t the legendary Moon God Flash Butterfly at all! It’s just the lowest-tier, weakest Flash Butterfly… a glorified glowstick with wings! Now, staring down millions of fanatical devotees, a three-year deathmatch with the Cang Yue Emperor, and every major sect plotting my demise… This is… an unprecedented crisis for a weak beast tamer like me!

Got It?

Seung-Jeong inherits a shamanic power that only activates through intense pleasure shared with someone on the same wavelength. After a chance encounter at a casino ties him to Ga-Yoon, the two reunite under dangerous circumstances when Ga-Yoon’s adoptive father dies in a suspicious accident. Bound by desire and a dangerous power, they grow closer as they search for the truth. (Source: Lezhin US) *Note: Includes 18 extra chapters.*

Re:Monster

Tomokui Kanata has been reincarnated into the weakest race, goblin, and given a new name, Gobrou, after having undergone an unfortunate death. However, Gobrou has retained his previous life&#039;s memories and ability to learn skills from what he eats. In this alternate world of survival of the fittest, events unfold. Will a goblin party become the heroes of this world, in a delightful twist from your usual scenario?

Shina Ultimate

Kiwamino Sena, a student at an elite sports academy, is able to use a special power called &quot;touch.&quot; One day, she gets saved by the track dropout Isshiki, changing both of their fates forever! However, Sena has a big secret...

My Sexy Snail Bride

I come home from work to find a warm dinner waiting for me on the table.<br> Hold on… I live alone, don’t I?<br> Someone is secretly sneaking into my place to cook, clean, and even do my laundry…<br> and honestly? It’s so convenient that I’ve already gotten used to it!

7's

A single, shining moment of youth becomes the gateway to an endlessly expanding hell of slaughter. An ordinary high school boy, Jou Kosaka, encounters a beautiful girl, Nagisa Tamura, who appears before him and asks, “Will you protect me?” From that moment, his normal life is thrown into chaos and becomes anything but ordinary. A pleasure-driven killer with no motive—known as the “Dimensional Rider”—targets Nagisa. With her death, time begins to loop for the two of them. Can they escape this cycle of endless time and killing…?

The Player That Can't Level Up

Kim GiGyu awakened as a player at the age of 18. He thought his life was on the track to success, climbing 'the tower' and closing 'the gates'... But even after clearing the tutorial, he was level 1. He killed a goblin a day, and he was still level 1. Even after 5 years, he was still level 1. "Who would have thought that this kind of player would exist." No one knew.