20 Best Mystery Anime That’ll Keep You On Your Toes

Hey! I have a question for you, do you like mysteries? I mean, everyone does because it keeps that vibe that makes us watch a series more and more. The suspense just makes us hooked to a show, right? There are so many fantastic anime, and I’m sure you have not watched all of them yet. 

There are also many different genres. One of our favorite anime genres is Mystery. 

Today, We will talk about the 20 Best Mystery Anime That’ll Keep You On Your Toes. Hope you are all thrilled and excited about this one. Make sure to read this article till the end. There are lots of fantastic mystery anime on the list and without wasting anime time, let’s get right to it.

#20 Summer Time Rendering

#20 Summer Time Rendering - Best Mystery Anime

Number of seasons: 1
Number of episodes: 25
Mystery Level: 67 /100

This anime has currently aired 15+ episodes, and there will be 25 episodes in total. Shinpei Ajiro has been living with the Kofun family since his parents died.

The Kofun family had two daughters, Mio and Ushio. As he grew up, Shinpei left his home island and went to Tokyo for his further studies. However, he came back because Ushio died after drowning, but something about her death didn’t add up.

People said she drowned while trying to save a girl’s life, but Ushio had bruises on her neck. Ajiro concluded that it was not an accident but a murder. Strange things started occurring as he tried to discover what had happened to Ushio. This anime is full of suspense and has a lot of plot twists. You’ll love it.

#19 Blood-C

#19 Blood-C - Best Mystery Anime

Number of seasons: 1
Number of episodes: 12
Mystery Level: 68/100

Saya Kisaragi is a pretty schoolgirl by day who likes peace, but by night she is a monster slayer who kills all the monsters that try to invade her village. Saya’s father gave her a sword and asked her to save the town, but soon everything became a mystery.

She was fighting a monster once when she heard the Monster talking about something Saya had no clue about. Soon a talking dog came to her and asked her why she was doing what she was doing and to whom she made a promise.

Everything stands twisted, but Saya has to slay the Monster and find out what she doesn’t know. Follow her on this journey.

#18 Paranoia Agent

#18 Paranoia Agent - Best Mystery Anime

Number of seasons: 1
Number of episodes: 13
Mystery Level: 70 /100

This anime is not made for everyone, and that’s because it is disturbing. Shounen Bat, aka Lil’ Slugger, is a person who walks around with his golden rollerblades and always carries a bent golden-colored metal bat.

Well, all he does is attack and kill people with the bat. Right now, the whole of Musashino City is terrified because people are becoming his victims one by one. Keiichi Ikari and Mitsuhiro Maniwa are two detectives trying to capture Lil Slugger. Until they seize him, he will target more people and attack them.

Children and adults are equally terrified, but you can’t run away from Lil Slugger. He will catch you. It’s a good anime. You should try it if you have a strong mind and can watch disturbing or gore themes.

#17 Vampire Knight

#17 Vampire Knight - Best Mystery Anime

Number of seasons: 2
Number of episodes: 26
Mystery Level: 72 /100

Yuuki Cross and Zero Kiryuu are Cross Academy’s students and the disciplinary committee members. In this academy, there are two types of classes- the day class and the night class.

The job of the disciplinary committee is to maintain peace while switching classes. However, the night class has a secret that the day class is unaware of. All those beautiful and handsome students are not human, and they are vampires.

A vampire once attacks Yuuki, and Kaname Kuran saves his life. He is one of the pure-blooded vampires. They often see each other when the classes switch, and Yuuki’s feelings are growing towards Kaname.

But Zero Kiryuu hates vampires and believes they can’t live peacefully with humans. A few secrets reveal that will change things between the Day and Night classes. Make sure to watch it so you can find out what happened.

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#16 Gosick

#16 Gosick - Best Mystery Anime

Number of seasons: 1
Number of episodes: 24
Mystery Level: 73 /100

Kazuya Kujou just came to Saint Marguerite Academy, a boarding school in Sauville, a South European Country. He is from Japan, and his facial features and black color hair got him a nickname, “Black Reaper,” from the other students.

Black Reaper was an urban legend who brought death during the spring season. One day Kujou visited the school library so he could read some ghost stories, but his interest suddenly changed when he saw a strand of golden hair on the stairs.

All that hair led Kujou to a beautiful garden where he met Victorique de Blois. She was like a real-life doll. Well, I can only reveal this much. Any more will lead to spoilers. What are you waiting for? Just go and watch this anime.

#15 Black Butler

#15 Black Butler - Best Mystery Anime

Number of seasons: 1
Number of episodes: 24
Mystery Level: 75 /100

If you want action, mystery, and supernatural themes in one anime, Black Butler is the one for you. Black Butler is a fantastic anime, and it has a lot of elements in it that make it so entertaining.

Ciel Phantomhive, aka the Queen’s Guard Dog, works for the queen, follows all her orders, and makes sure to complete all the tasks given by her. He has a royal butler whose name is Sebastian Michaelis.

And he is devoted to his master Ceil. However, Ciel’s past is traumatic, and Sebastian is not an ordinary butler. He is a demon, and he promised Ciel that those who did him wrong would be punished, but in exchange, Sebastian would take his soul.

Their bonding became more assertive as time passed, and now they are unbeatable in heaven or hell. No one can do them apart. But still, many problems are waiting for them. Will they be able to overcome everything?

#14 The Millionaire Detective Balance: Unlimited

#14 The Millionaire Detective Balance Unlimited - Best Mystery Anime

Number of seasons: 1
Number of episodes: 11
Mystery Level: 77/100

Imagine being so rich that you could buy anything like a 3 million-dollar car or a house worth 100 million in an Instant. Daisuke Kanbe doesn’t have to imagine being a millionaire because he has an unlimited bank balance.

Even though he is so rich, He is a detective in the profession. Now Daisuke is part of Modern Crime Prevention, and Haru Katou is now his new partner. They both are entirely different. Daisuke doesn’t care about anything because he can achieve anything with money. 

On the other hand, Haru is devoted to his work and cares about the safety of people. These two opposite individuals become partners, and together they unsolve a case that no one was able to solve for many years.

This case is related to Daisuke and the Kambe family. And believe me, you’ll be shocked when the issue gets solved. It’s a great anime with a great plot and badass characters.

#13 Deadman Wonderland

#13 Deadman Wonderland - Best Mystery Anime

Number of seasons: 1
Number of episodes: 12
Mystery Level: 79/100

Ganta Igarashi was a regular student and was supposed to go on a field trip to Deadman Wonderland. It’s a prison where criminals are punished. However, that day his life completely changes because all of Ganta’s classmates are killed by a mysterious Red Man.

He is framed for the massacre, and instead of visiting the Deadman Wonderland, Ganta is also a prisoner. This is not any ordinary prison either because all the inmates here have to wear a deadly collar, and the only way to save yourself from that collar is to fight in deadly battles and win.

There is also a girl named Shiro there. She is not any ordinary girl but a girl with powers. And Ganta doesn’t know that he also possesses some powers. Now he has to prove himself innocent and get out of Deadman Wonderland.

#12 Bakemonogatari

#12 Bakemonogatari - Best Mystery Anime

Number of seasons: 1
Number of episodes: 15
Mystery Level: 80/100

Bakemonogatari is one of the many Monogatari series. Its unique animation and special vibe make it a great anime. Koyomi Araragi used to be a vampire, but Meme Oshino helped him to become a human, and they both succeeded.

Even after becoming a human, he still had some powers, like healing and supervision. Now Araragi is living everyday life with his friends and Tsubasa Hanekawa. Everything changes when Hitagi Senjougahara falls down the stairs, and Araragi saves her, but something about this girl is weird. Her weight.

She was weightless like a feather. Now he wants to help her with the assistance of Meme Oshino. Hitagi is not the only one who needs help. More people have powers and suffer because of them. Araragi will try his best to help everyone.

#11 Made in Abyss

#11 Made in Abyss - Best Mystery Anime

Number of seasons: 2
Number of episodes: 25
Mystery Level: 82/100

Made In Abyss is not an underrated anime; this anime has gained so much popularity and praise. But many people still don’t know about this masterpiece, and the good news is the second season just started airing, and 4 episodes have been aired so far.

This anime is about The Abyss. It is a chasm that goes to the deepest part of the earth. In the death of this chasm supposedly dwells many strange creatures and relics. Many divers go inside The Abyss to see what lies beneath but most never return.

Riko, a young girl, wants to know what is in The Abyss after her mother, who goes down there, goes missing. What will happen? Will Riko be able to see what lies at the deepest part of The Abyss, and will she ever meet her mother again? Watch it to find out.

#10 Ergo Proxy

#10 Ergo Proxy - Best Mystery Anime

Number of seasons: 1
Number of episodes: 23
Mystery Level: 83/100

Ergo Proxy is one of those anime that deserves more popularity. It is a great anime, but many people don’t know about it. Global ecological catastrophe destroys most human civilization on earth, and now Romdo is the only city with human culture.

Besides this city, no other place is safe for humans, and survival is impossible outside this city. To make things easier and to get help, people create humanoid robots known as AutoReivs.

However, these robots get infected by a virus/disease known as Cogito Virus, and now they are gaining self-thought and awareness. The Ruler of Romdo has a granddaughter named Re-l Mayer. She and her humanoid companion Iggy unsolve the Mystery behind this virus.

#9 Death Parade

#9 Death Parade - Best Mystery Anime

Number of seasons: 1
Number of episodes: 12
Mystery Level: 85/100

Death Parade is an anime with a unique plot and memorable characters. People say we go to hell or heaven when we die, but some go to Quindecim. When two people die simultaneously, they go to a bar where Decim, the bartender, attends them and works as the judge.

He makes you play deadly games, and those games decide whether you’ll be thrown into the infinite void or reincarnated as a human again. These games are not easy, and you must be ready for the worst.

And yes, don’t disrespect Decim because he’ll pass the judgment. The rules of the game and the way of passing judgment never change until a black-haired girl appears in Quindecim and becomes Decim’s assistant. It’s a must-watch anime, and you should not miss it.

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#8 Future Diary

#8 Future Diary - Best Mystery Anime

Number of seasons: 1
Number of episodes: 26
Mystery Level: 87/100

Future Diary is an anime that will make you question everything. It’s a great anime, but it is somewhat disturbing. Yukiteru Amano is an introvert and a shy individual who doesn’t have any friends.

That’s why whatever happens in his daily life, he writes it all down in a digital diary. Yukiteru has an imaginary friend whose name is Deus Ex Machina. Later, he learns that some of the events written in that digital Diary later occur in real life.

Yuno Gasai is a girl who is the same as Yukiteru, and she has the same digital Diary as him. Deus Ex Machina was the real god of time and space, and now Yukiteru and Yuno will become part of a survival game along with 10 other candidates.

The one who wins will become the next god of time and space. This anime has 26 episodes, and those 26 episodes will surely amaze you.

#7 Detective Conan

#7 Detective Conan - Best Mystery Anime

Number of seasons: (Not divided in seasons)
Number of episodes: 1000+
Mystery Level: 89/100

Detective Conan or Case Closed is one of the long-running anime, with over 1000+ episodes and 15+ movies. This series is still airing. Detective Conan is based on Shinichi Kudou, a high school student with excellent skills in detective work who has solved several cases and is still solving more issues.

No matter the problem or case, Shinichi, aka Conan, will solve it and reveal the absolute truth in front of everyone. If you have time and you want to enjoy a long series with a new plot every week, then this series is for you. It has excellent Mystery, character, and intrigue, and it’s not that dark. It has comedy in it as well, so it is a complete package of entertainment.

#6 Erased

#6 Erased - Best Mystery Anime

Number of seasons: 1
Number of episodes: 12
Mystery Level: 90/100

Erased will blow your mind. This anime is just so crazy, and it has some jaw-dropping plot twists, but yeah, this anime can make you cry or make you feel depressed for days. Satoru Fujinuma is a mangaka, but he has supernatural powers to go back a few minutes in the past.

By using this power, this 29-year-old man saved many lives. But Satoru was later accused of a crime that he didn’t commit, and that’s when he was sent 18 years in the past, and this time things seem to be different.

All these events may be related to a girl named Kayo Hinazuki, who was Satoru’s classmate and got killed when they were children. With the powers of knowing what will happen in the future, he has the chance to save this mysterious girl and prove himself innocent, but the one who framed Satoru for the crime won’t let him get away.

#5 Shiki

#5 Shiki - Best Mystery Anime

Number of seasons: 1
Number of episodes: 22
Mystery Level: 92 /100

Do you like Vampire shows with Mystery? Then Shiki is probably the best anime that will frighten and interest you simultaneously. Sotoba is a small town in the countryside, and people live a simple but peaceful life there.

But soon, everything changes after the death of a beautiful young girl Megumi Shimizu. More people started dying daily, and many even left this town. The Town’s doctor Toshio Ozaki could not figure out what was happening. Initially, he thought this was a pandemic, but this was not true.

Everything was related to the Kanemasa mansion and the family that had just moved there. This family is mysterious, and they are not ordinary. Toshio, Natsuno Yuuki, and two others are about to reveal the real secret behind all these deaths.

 This is a great anime, and it has great suspense and storyline.

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#4 Death Note

#4 Death Note - Best Mystery Anime

Number of seasons: 1
Number of episodes: 37
Mystery Level: 94/100

This world is rotten, crime, greed, and war are everywhere, and humans do not intend to change. Shinigami (death god) Ryuk is bored in the underworld, and to get rid of this boredom, he drops his death note in the mortal realm.

Light Yagami, a 17-year-old genius, picks up this death note, and at first, he doesn’t believe that the person whose name would be written on this death note will DIE. But after writing a few names and watching the outcomes, Light realized everything was true.

Ryuk showed up, and he knew what was going to happen. Most dangerous criminals worldwide suddenly started dying one by one, and the person behind all this death was KIRA. Kira is Light’s alias. And now, all the forces try to capture this new criminal, Kira, a self-proclaimed judge, and executioner.

 A well-known detective, L, is also on the mission to find Kira. This is one of the best physiological/mastery anime.

#3 Steins;Gate

#3 Steins;Gate - Best Mystery Anime

Number of seasons: 2
Number of episodes: 47
Mystery Level: 96/100

Honestly, I don’t want to spoil this anime for you, not even a little. I want you to know that it is one of the most loved anime on the planet; even on My Anime List, it is ranked 4th and is rated by over 1.2 million people.

This anime is about a few scientists and how one of their inversions was able to connect with the future. Steins Gate and Steins Gate:0 are two different series Steins Gate:0 continues from where the first part ended.

Both parts are just unique, and you should not miss this masterpiece. I can assure you that you won’t regret watching this anime.

#2 Monster

#2 Monster - Best Mystery Anime

Number of seasons: 1
Number of episodes: 74
Mystery Level: 98/100

People say that Light is the best manipulator of all time, but they are wrong; if you’ve watched Monster, you might know that Johan Liebert is the craziest manipulator. A well-known neurosurgeon Dr. Kenzou Tenmahas saved many lives and is appreciated for his work.

His life was going well until he had to choose between two patients. The town’s mayor needed surgery, but at the same time, Johan Liebert, a young boy, also required surgery, and learning from his experience, Dr. Kenzou decided to save the young boy’s life.

This decision made his life miserable because he lost all his reputation. But after an event, two doctors and the hospital director died, and now Kenzou is the new director. It’s been 9 years since he saved the life of a young boy, but a mysterious person is directly manipulating people and making them kill themselves or others.

And that person was none other than Johan Liebert. So, what will Dr. Kenzou do now? Because he was the one who saved this MONSTER.

#1 Another

#1 Another - Best Mystery Anime

Number of seasons: 1
Number of episodes: 12
Mystery Level: 100/100

When I hear Mystery, the first thing that pops up in my mind is Another. From the beginning, suspense is maintained, and the final truth reveals itself in the last episode. You have to watch this anime.

It’s the best. Kouichi Sakakibara has just joined Yomiyama North Junior High. He is the transfer student who’ll be part of classes 3-3. Something about this school and type doesn’t feel right.

There is a girl named Mei Misaki, but the thing is, people never pay attention to her; it’s like they can’t see her. Kouichi takes an interest in this girl, and they both become friends. Mei reveals that there is a curse, and that curse is the reason why many people die. To avoid the curse, people pretend that she doesn’t exist.

Both want to know why all these mysterious deaths are happening, but the absolute truth is unexpected. When you watch this anime, you will get chills all over your body.

Ohh hey there, so you are already here? Well, you might think this is the end, but it isn’t because there are more anime that’s just fire, and you need to check them out. Here are some honorable mentions.

Honorable Mentions

  • Un-Go
  • Old Taxi
  • Serial Experiments Lain
  • Mononoke
  • Ghost Stories
  • Ghost Hunt
  • Durarara!

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Are There Any Mystery Anime?

Yes, there are many Mystery anime like Steins Gate, Made in Abyss, Shiki, Blood- C, and many more on the list.

Which Anime Has the Most amount of Suspense?

There are so many anime with a lot of suspense. Some of the best are Another, Ergo Proxy, Death Note, Shiki, etc.

Is Erased a Mystery Anime?

Yes. Erased is a mystery anime with a lot of suspense and plot twists.

Is Monster Anime a Mystery?

Yes. Monster anime has a great mystery in it. All the Mystery is related to a manipulator, Johan Liebert, a MONSTER.

So, Which mystery anime are you going to try out next?

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