10 Best Anime series like I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021)

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I've Been Killing Slimes for 300 Years and Maxed Out My Level 2021
After dying of overwork in the real world, I’m reincarnated as an immortal witch, and I spend 300 years enjoying a relaxing life. At some point, though, I end up at level 99! All those years spent killing slimes to make the money to pay the bills gave me a ton of experience points. Rumors of the level 99 witch spread, and soon I’m up to my ears in curious adventurers, duelist dragons, and even a monster girl calling me her mom! I’ve never been on an adventure, but I’m the strongest in the world… What’s going to happen to my relaxing life?!
List of the best anime series like I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021): Kamisama Kiss, Plunderer, Black Clover, The Misfit of Demon King Academy, Otherside Picnic, Jujutsu Kaisen, My Next Life as a Villainess: All Routes Lead to Doom!, Soni-Ani: Super Sonico The Animation, The Way of the Househusband, The Rising of The Shield Hero.

Kamisama Kiss (2012)
Markimdb: 8.1
Genrecomedy, melodrama, cartoon, anime
CountryJapan

Nanami was just a normal high school girl down on her luck until a stranger’s lips marked her as the new Land God and turned her world upside down. Now, she’s figuring out the duties of a deity with the help of Tomoe, a reformed fox demon who reluctantly becomes her familiar in a contract sealed with a kiss. The new responsibilities—and boys—are a lot to handle, like the crow demon masquerading as a gorgeous pop idol and the adorable snake spirit who’s chosen the newly minted god to be his bride. As the headstrong Tomoe tries to whip her into shape, Nanami finds that love just might have cute, pointed fox ears. With romance in the air, will the human deity be able to prove herself worthy of her new title?

Plunderer (2020)
Markimdb: 6.4
Genreaction, fantasy, cartoon, anime
CountryJapan

In a post-apocalyptic world dominated by the so-called "Numbers," each human will have their identity branded with their own "Count," which could define any number related to their life. May it be one's walked distance or amount of compliments given to them by others, this Count could lead them to the abyss when it has dropped to zero.In the year 305 of the Alcian calendar, Hina has inherited a mission from her Mother, whose Count has depreciated to zero, to search for the Legendary Red Baron. In her adventure, she meets a half-masked swordsman named Licht who tries to hide his identity, as he is known as a degenerate for having an incredibly low Count.

Black Clover (2017)
Markimdb: 8.3
Genreaction, fantasy, comedy, cartoon, anime
CountryJapan
Duration01:15

Asta and Yuno are two orphans who want the same thing: to become the Wizard King. Locked in a friendly rivalry, they work hard towards their goal. While Yuno excels at magic, Asta has a problem uncommon in this world: he has no powers! But, on the day they receive their grimoires, they surprise everyone. To reach their goal, they’ll each find their own path to greatness—with or without magic.

The Misfit of Demon King Academy (2020)
Markimdb: 7.3
Genreaction, fantasy, comedy, cartoon, anime
CountryJapan

Anos Voldigord was a tyrannical Demon King that eradicated humans, spirits, and even the gods, but became bored of eternal warfare and reincarnated with dreams of a peaceful world. However, what awaited him in reincarnation after 2000 years were descendants who became too weak after being accustomed to peace, and all sorts of magic that deteriorated to the extreme. Anos enters Demon King Academy that gathers and educates those who are viewed as the reincarnation of the Demon King, but the academy could not see through his true powers and ends up branding him as a misfit.

Otherside Picnic (2021)
Markimdb: 6.1
Genrefantasy, adventure, cartoon, detective, anime
CountryJapan

Friendless college girl Sorawo finds a door to another world one day — a strangely post-apocalyptic-feeling Otherside with serene emptiness, which becomes her new “special place.” There, she meets one other human, the beautiful and independent Toriko, and they explore the abandoned Otherside together.

Jujutsu Kaisen (2020)
Markimdb: 8.7
Genreaction, fantasy, cartoon, anime
CountryJapan

Yuuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a friend who has been attacked by Curses, he eats a finger of Ryoumen Sukuna, taking the Curse into his own soul. From then on, he shares one body with Sukuna. Guided by the most powerful of sorcerers, Satoru Gojou, Itadori is admitted to the Tokyo Prefectural Jujutsu High School, an organization that fights the Curses... and thus begins the heroic tale of a boy who became a Curse to exorcise a Curse, a life from which he could never turn back.

My Next Life as a Villainess: All Routes Lead to Doom! (2020)
Markimdb: 7.4
Genrefantasy, comedy, melodrama, adventure, cartoon, anime
CountryJapan

After hitting her head particularly hard one day, Duke Claes' daughter, Katarina, suddenly recalls all the memories of her past life: that of a teenage Japanese girl. Just before her untimely death, this girl recalls playing an otome game... that is exactly like the world she's living in now! She is now Katarina Claes, the antagonist of the otome game, who nastily hounded the protagonist until the end. Knowing all the possible outcomes of the game, she realizes that every single possible route ends with Katarina being murdered or exiled! In order to avoid these Catastrophic Bad Ends, she has to use her knowledge of the game and her own wiles, starting with breaking off this engagement with the prince... Will Katarina survive while making her way through this world, where bad flags trip at every turn? Find out in this reverse-harem rom-com, led by everybody's favorite villainess!

Soni-Ani: Super Sonico The Animation (2014)
Markimdb: 5.8
Genrecomedy, cartoon, anime
CountryJapan
Duration00:25

"Super Sonico" debuted as Nitro+'s live mascot girl, and her world will be brought to life in the anime, "SoniAni - SUPER SONICO THE ANIMATION -"!

The Way of the Househusband (2021)
Markimdb: 7.3
Genrecomedy, cartoon, anime
CountryJapan

Tatsu, a notorious and feared yakuza leader nicknamed "The Immortal Dragon," withdraws from the criminal syndicate and becomes a housekeeper to help his wife, Miku. The series features a variety of comedic settings, typically showing Tatsu's domestic activities and intimidating inequality with his looks, as well as multiple encounters with his former colleagues and rivals in the Japanese Criminal Syndicate.

The Rising of The Shield Hero (2019)
Markimdb: 8.1
Genreaction, fantasy, comedy, melodrama, adventure, cartoon, anime
CountryJapan
Duration01:30

Iwatani Naofumi was summoned into a parallel world along with 3 other people to become the world's Heroes. Each of the heroes respectively equipped with their own legendary equipment when summoned, Naofumi received the Legendary Shield as his weapon. Due to Naofumi's lack of charisma and experience he's labeled as the weakest, only to end up betrayed, falsely accused, and robbed by on the third day of adventure. Shunned by everyone from the king to peasants, Naofumi's thoughts were filled with nothing but vengeance and hatred. Thus, his destiny in a parallel World begins...

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Mushoku Tensei: Jobless Reincarnation (2021)
Markimdb: 8.3
Genrefantasy, adventure, cartoon, anime
CountryJapan

34-year-old virgin loser is kicked out of his home by his family and realized that his life is completely over. As he regrets wasting his life, a truck runs him over and he died. When he wakes up... He’s in a world of sword and sorcery! Reborn as a baby named Rudeus, he decides that this time, he’ll live a life he won’t regret!

Little Witch Academia (2017)
Markimdb: 7.9
Genrefantasy, comedy, cartoon, anime
CountryJapan
Duration01:27

When she was a little girl, Atsuko "Akko" Kagari saw a magic show performed by a witch named Shiny Chariot. From that day on she wanted to be just like her. Enrolling at Luna Nova Magical Academy and having no magical background, can she become a witch like her idol Shiny Chariot?

In/Spectre (2020)
Markimdb: 6.7
Genrefantasy, comedy, melodrama, cartoon, detective, anime
CountryJapan

At the young age of 11, Kotoko Iwanaga was abducted by youkai for two weeks and asked to become their "God of Wisdom," a mediator between the spirit and human worlds, to which the girl quickly agreed but at the cost of her right eye and left leg. Now, six years later, whenever youkai wish for their problems to be solved, they make their way to Kotoko for consultation.Meanwhile, Kurou Sakuragawa, a 22-year-old university student, has just broken up with his girlfriend after he fled alone when the two encountered a kappa. Seeing this as her chance to become closer with him, Kotoko immediately makes her move, hoping to get married to Kurou one day. However, she quickly realizes there is something more to Kurou. With this knowledge, she asks for his help in solving the various issues presented by the supernatural, all the while wishing her newfound partner will eventually reciprocate her feelings.

Arifureta: From Commonplace to World's Strongest (2019)
Markimdb: 7
Genreaction, fantasy, melodrama, adventure, cartoon, anime
CountryJapan
Duration00:57

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world! They're treated like heroes and tasked with the duty of saving the human race from utter extinction. But what should have been any otaku's wet dream quickly turns into Hajime's nightmare. While the rest of his class are blessed with godlike powers, Hajime's job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair. Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith's level of strength?

How Not to Summon a Demon Lord (2018)
Markimdb: 7.1
Genrefantasy, comedy, adventure, cartoon, anime
CountryJapan
Duration01:08

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist "I am the real summon master." Takuma gets slave-turning magic used for summoned beasts cast on him by the girls―However, the peculiar ability "Magic Reflection" is invoked! The ones that were turned to slaves were the girls!Takuma was bewildered. He's the strongest magician but, he doesn't have any social skills. Panicking, the first words that came out were the ones that he used inside the game role-playing the Demon King?! "I'm amazing you say? Of course I am. I am Diablo... The one feared as the Demon King!"This is the story the Demon King (acting) that would soon inspire the world and his other world adventure that he plunges through with his absolute strength, raise the curtain!

Yuuna and the Haunted Hot Springs (2018)
Markimdb: 6.9
Genrefantasy, melodrama, cartoon, detective, anime
CountryJapan

Kogarashi has the ability to see supernatural, and has been possessed by ghosts since he was a kid but now he has learned to fight back against them! Unfortunately, he's now also very poor, homeless, and hoping for a happier, more normal, high school life. In his search for housing, he's introduced to a very cheap boarding house called Yuragi Manor, which was formerly a hot springs inn. It's so cheap because the house is haunted by the spirit of a high school student whose corpse was found there.Kogarashi doesn't think this is going to be a problem for him. Soon he finds that Yuragi Manor's ghost is a 16-year-old girl named Yuna, who lives in his room. Kogarashi has no desire to hurt a ghost girl, and instead he ends up agreeing to help her to figure out her unfinished business so that she can move onto the afterlife before turning evil. Once it is clear that he is fine with Yuna, the other tenants reveal their own secrets—his life in Yuragi Manor is going to be far from ordinary!

Demon Lord, Retry! (2019)
Markimdb: 6.8
Genreaction, fantasy, cartoon, anime
CountryJapan

Akira Oono is an ordinary working adult who manages the MMORPG Infinity Game. Fifteen years after creating the game, Oono decides to shut the servers down once and for all. However, as the clock strikes midnight, he somehow finds himself in the body of middle-aged Hakuto Kunai, Infinity Game's Demon Lord!Soon after his mysterious transportation, he witnesses the demon Greole chasing after a little girl named Aku. Although he effortlessly dispatches the creature, Hakuto is still concerned; after all, he does not remember creating the girl or the demon! Doubting whether he truly is in the world of his creation, Hakuto decides to investigate. Bringing Aku along as his guide and companion, Hakuto sets out on a journey to find out exactly who or what summoned him to this fantasy world—all while leaving chaos and destruction in his wake.

In Another World with My Smartphone (2017)
Markimdb: 6.6
Genrefantasy, comedy, melodrama, cartoon, anime
CountryJapan
Duration01:46

Touya Mochizuki was accidentally killed, and as an apology, God allows him to be reborn in a fantasy world and will grant him any one wish he desires. And so, Touya chooses to keep his smartphone in the next world. In his second chance at life, he befriends many important figures and comes across the world's secret. He inherits the legacy of an ancient civilization and travels around nonchalantly while possessing powers that rival this world's kings.

The Helpful Fox Senko-san (2019)
Markimdb: 6.9
Genrefantasy, comedy, melodrama, cartoon, anime
CountryJapan
Duration01:42

Nakano is an employee of an exploitative "black" company, who meets a divine fox spirit named Senko. While she looks like a young girl, Senko is in fact 800 years old. She offers to spoil Nakano as much as possible, and begins looking after him.

That Time I Got Reincarnated as a Slime (2018)
Markimdb: 8.1
Genrefantasy, comedy, cartoon, anime
CountryJapan
Duration01:52

"Rimuru Tempest" is the new name of a slime in a fantasy world taken by a former 37-year-old human Satou Mikami after he is killed by a passing robber. Broken free from ordinary, stale past life, his fresh adventure in a fantasy world as a slime monster with unique abilities begins.

So I'm a Spider, So What? (2021)
Markimdb: 7.2
Genrefantasy, comedy, adventure, cartoon, anime
CountryJapan

I, the protagonist, was just an ordinary high school girl, but suddenly I was reincarnated as a spider monster in a fantasy world. Not only that, but I awakened in a dungeon filled with vicious monsters. Armed with only my human knowledge and my overwhelming positivity, I'm forced to use spiderwebs and traps to defeat far stronger monsters just to stay alive... So begins the labyrinth survival story of a girl with incredible mental strength living as one of the lowest-ranked beasts!

Grimoire of Zero (2017)
Markimdb: 7
Genrefantasy, adventure, cartoon, anime
CountryJapan

Year 526 of the Liturgical Calendar. The world knew that witches existed, and that they practiced the notorious art of sorcery. Nevertheless, the world did not know anything about the study of magic. Our story follows a half-man, half-beast mercenary; humans mockingly call his kind the “fallen beasts”. He always dreamt of becoming a human, but one day, he met a witch who would change his life forever. “Do you desire a human form? Then be my escort, mercenary!” The witch introduced herself as “Zero”, and explained that she was searching for a one-of-a-kind magical tome that bandits had stolen from her lair. Entitled “The Book of Zero”, the grimoire supposedly contained valuable magical knowledge that could be used to effortlessly bring the world to its knees. Thus, in order to realize his dream of becoming a human, the mercenary must accompany Zero on her journey—despite her being one of the witches he so loathed. This is the story of a haughty sorceress and a kindhearted beast.

Miss Kobayashi's Dragon Maid (2017)
Markimdb: 7.7
Genrefantasy, comedy, cartoon, anime
CountryJapan
Duration00:50

Kobayashi lives alone in an apartment, until one day, Tooru appeared and they ended up living together. Tooru looks down on humans as inferior and foolish, but having been saved by Kobayashi-san, she does everything she can to repay the debt and help her with various things, although not everything goes according to plan. A mythical everyday life comedy about a hard working office lady living with a dragon girl.

Infinite Dendrogram (2020)
Markimdb: 5.8
Genrefantasy, adventure, cartoon, anime
CountryJapan

In the year 2043, Infinite Dendrogram, the world's first successful full-dive VRMMO was released. In addition to its ability to perfectly simulate the five senses, along with its many other amazing features, the game promised to offer players a world full of infinite possibilities. Nearly two years later, soon-to-be college freshman, Reiji Mukudori, is finally able to buy a copy of the game and start playing. With some help from his experienced older brother, Shuu, and his partner Embryo, Reiji embarks on an adventure into the world of Infinite Dendrogram.

Fate/Grand Order Absolute Demonic Front: Babylonia (2019)
Markimdb: 7.4
Genrefantastic, action, fantasy, drama, cartoon, anime
CountryJapan

Following the success in the Camelot Singularity, Ritsuka Fujimaru and Mash Kyrielight are assigned to the last Singularity in the Grand Order initiative. In Ancient Babylonia, 2500 BCE, they embark on a mission to secure humanity's survival. Upon arrival, they learn that three gods have threatened Uruk, the Babylonian city ruled by King Gilgamesh. Ritsuka and Mash must work together to fend off the invasion of mysterious beasts in Uruk under Gilgamesh's orders while investigating the true nature of the three gods' actions against humanity; but unknown to Ritsuka, an ancient entity is slowly rising from its slumber.

Hakkenden: Eight Dogs of the East (2013)
Markimdb: 7
Genrefantasy, adventure, cartoon, anime
CountryJapan

Hakkenden: Eight Dogs of the East is a Japanese manga series by Miyuki Abe based on the epic novel series Nansō Satomi Hakkenden. An anime adaptation of the manga, produced by Studio Deen, premiered on January 5, 2013. A second season has been announced to premiere summer 2013.

Fairy Tail (2009)
Markimdb: 8
Genreaction, fantasy, cartoon, anime
CountryJapan
Duration00:25

Lucy is a 17-year-old girl, who wants to be a full-fledged mage. One day when visiting Harujion Town, she meets Natsu, a young man who gets sick easily by any type of transportation. But Natsu isn't just any ordinary kid, he's a member of one of the world's most infamous mage guilds: Fairy Tail.

Burn the Witch (2020)
Markimdb: 6.8
Genreaction, fantasy, cartoon, anime
CountryJapan

Historically 72% of all the deaths in London are related to dragons, fantastical beings invisible to the majority of the people.While unknown to most, some people have been standing up to these dragons.Only inhabitants of Reverse London who live in the hidden “reverse” side of London can see the dragons. Even then, only a selected few become qualified enough as witches or wizards to make direct contact with them.The protagonists of the story are witch duo Noel Niihashi and Ninny Spangcole. They are protection agents for Wing Bind (WB), an organization for dragon conservation and management. Their mission is to protect and manage the dragons within London on behalf of the people.

Angels of Death (2018)
Markimdb: 6.4
Genrefantasy, adventure, cartoon, anime
CountryJapan

Most girls waking up without any memory and meeting a serial killer would panic, but not Rachel. In fact, far from being her biggest problem, killer Zack might just prove a convenient resource when it comes to finding a way out of the building in which they're both trapped!

Isekai Cheat Magician (2019)
Markimdb: 5.2
Genreaction, fantasy, adventure, cartoon, anime
CountryJapan

As regular high school students Taichi and Rin disappeared in a beam of light. When they came to, the two of them were already in a world of swords and magic. Finally getting away after experiencing an attack by monsters, following the suggestion of adventurers they headed on the path towards the guild. In the guild, the two of them found out that they possessed unbelievably powerful magic. Thus the regular high school students transformed into the strongest cheats...




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