Slime Taoshite 300-nen Manga: The Story of a 300-Year-Old Witch and Her Adorable Slime Companion


Slime Taoshite 300-nen

Slime Taoshite 300-nen or “I’ve Been Killing Slimes for 300 Years and Maxed Out My Level” is a Japanese light novel turned manga series written by Kisetsu Morita and illustrated by Benio. The story follows the life of Azusa, a woman in her thirties, who died from overworking in Japan and reincarnates in a fantasy world filled with magic and mythical beasts.

In the world where Azusa reincarnated, levels exist, and the strength of an individual is determined by their level. Azusa, having the mind of an adult, decided to lead a peaceful life and lived in a cottage in the mountains. However, she accidentally killed a low-level slime that attacked her. The slime’s experience points earned her a level up, and she realized that killing slime was an easy way to gain experience and level up faster.

As Azusa kept killing slimes, she began to realize that she had been doing it for over 300 years. Her strength became extraordinary, and she became known as the Witch of the Plateau. Years passed, and Azusa lived a peaceful life, until different characters come into the picture, changing her life completely.

Slime Taoshite 300-nen is a relaxing, comedic, and heartwarming manga that focuses not only on Azusa’s journey but also on the different people she meets in her life. The manga also highlights the importance of relationships, friendships, and self-care, making it a relatable read for those who want to take a break from the fast-paced life.

From Overworked Employee to the Strongest Witch: The Plot of Slime Taoshite 300-nen Manga

Slime Taoshite 300-nen Manga Cover

If you’re tired of the same old isekai tropes, Slime Taoshite 300-nen might just be the refreshing manga you’ve been looking for. This charming story follows the life of Azusa Aizawa, a young woman who dies of overwork in Japan.

But instead of the typical “summoned to another world” narrative, Azusa reincarnates in a completely different world on her own. And as if that wasn’t enough of a twist, she also discovers that she’s the strongest witch in this new world.

The setup might sound like it’s full of action and adventure, but the heart of the manga is Azusa’s journey towards living a more relaxed and fulfilling life. After all, she’s spent her entire previous existence working herself to the bone, so now she wants to take things easy and enjoy her new world at her own pace.

In Slime Taoshite 300-nen, Azusa is free to explore and learn about the world around her without the stress of deadlines and work-related stress. Instead, she spends her days gardening, cooking, and doing other peaceful activities alongside a cast of colorful characters who become her friends.

As the story progresses, Azusa occasionally gets caught up in some magical shenanigans and battles, but these moments are hardly the main focus of the manga. Instead, the series is all about taking a step back and appreciating the joys of life.

If you’re looking for a heartwarming story that’s full of laughs and heart, Slime Taoshite 300-nen is definitely worth checking out. It’s a welcome departure from the usual power-fantasy tropes of isekai manga, and its focus on self-care and balance is a refreshing message in today’s fast-paced world.


Slime Taoshite 300-nen

Slime Taoshite 300-nen, also known as I’ve Been Killing Slimes for 300 Years and Maxed Out My Level, follows Azusa Aizawa, a young woman who died of overwork and was reincarnated into a fantasy world. The manga features a cast of charming characters, who contribute to Azusa’s journey and quest for happiness in this new world.

Azusa Aizawa

Azusa Aizawa

Azusa Aizawa is the protagonist of Slime Taoshite 300-nen. She is a young woman who died of overwork and was reincarnated into a fantasy world. Azusa is kind-hearted, hard-working and determined to live a simple, peaceful life. She becomes incredibly powerful due to her experience as an overworked office worker in her past life and her efforts to gain experience points and level up in this new world. Azusa’s ultimate goal is to find happiness and a sense of belonging in her new life.



Laika is a dragon girl who befriends Azusa early on in the manga. She is cheerful, energetic and loves to eat. Laika has the ability to transform into a dragon and she becomes one of Azusa’s most trusted and loyal companions. She helps Azusa on her journey by providing her with valuable information and support. Laika’s enthusiasm and positive attitude are contagious and she quickly becomes one of Azusa’s closest friends.



Flatorte is a half-dragon girl who meets Azusa and Laika on their journey. She is shy and timid at first, but soon becomes close to Azusa and the others. Flatorte has a unique ability to see the future, which makes her a valuable member of Azusa’s team. She is fiercely loyal and protective of her friends, and is always willing to help out in any way she can.

In conclusion, Slime Taoshite 300-nen features a cast of charming and lovable characters, who contribute to Azusa’s journey of self-discovery and happiness in a new world. Each character brings their own unique traits and abilities, making the manga a joy to read.

Artstyle and Panels

Slime Taoshite 300-nen

The art style used in Slime Taoshite 300-nen manga is a feast for the eyes of anime and manga enthusiasts. It boasts of an inspired and refreshing approach that appeals to both newbies and experienced readers. One of the things that stand out in this manga series is the crisp and vibrant visuals of the characters and the environment around them.

The manga is set in a fantastical world with various creatures like dragons, magic, and mythical beings like witches and fairies. The manga artist has worked hard to bring the world of Slime Taoshite 300-nen to life, investing a significant amount of time and effort into intricately detailing the universe. You can see this through the intricately designed world-building and backgrounds that bring the quirky cast of characters to life.

The character designs are diverse and creative, with each one illustrating distinct features and personalities. The artist took time to ensure that each character not only looked the part but also had unique characteristics and memorable personalities. You can easily tell the difference between each character and compare their differing witty dialogues. They are also illustrated with great detail, from the spells they use to their wardrobes. The manga could quickly turn into a visual catalogue thanks to the sheer amount of detail and thought put into the visual representation of the creatures, tools, and weapons.

The panels in Slime Taoshite 300-nen manga are designed to flow seamlessly and improve the overall reading experience. The pages are well-balanced, and the panels are arranged in an easy-to-follow rhythm that keeps the readers hooked. The manga artist uses different panel shapes and sizes to show off the world around the characters and showcase the change in emotions of characters during dialogues. They often use expressive details and close-ups to emphasize critical moments in the story. This approach allows the manga to get very personal at times, immersing readers in the characters’ thoughts and emotions.

In conclusion, the art style and paneling in Slime Taoshite 300-nen manga are some of its most remarkable aspects. It reflects the manga artist’s enthusiasm for illustrating a fantastic world and bringing it to life for the readers to enjoy. The high-quality visuals and the well-structured panels create an unmatched immersive experience that any anime and manga fan would appreciate and enjoy.

The World’s New Favourite Manga: Reception of Slime Taoshite 300-nen

Slime Taoshite 300-nen manga cover

The manga genre is a vast and competitive space, with countless stories vying for the attention of readers. However, few have caught the public’s attention quite like the hilarious and heartwarming story of Slime Taoshite 300-nen.

The manga series follows the life of Azusa, an overworked and underappreciated office worker who dies from exhaustion. However, she is reincarnated in a fantasy world as an immortal witch and sets out to live a peaceful life. The storyline does not sound unique compared to others in the genre, but the wit and charm of the characters set it apart.

Since its publication in 2017, Slime Taoshite 300-nen has been nothing short of a sensation. Fans of the series have applauded its unique storyline, unforgettable characters, and its masterful combination of humour and drama. As a result, this enchanting series has garnered a following around the globe and has become one of the most beloved manga in recent years.

Slime Taoshite 300-nen has also enjoyed considerable success on different platforms by getting an anime adaptation that aired in April 2021. The anime has attracted even more fans and has boosted the series’ popularity to new heights.

The fans have lauded the series for its distinct silliness and heartwarming moments. Azusa, the main character, attracts readers with her adorable appearance, charm, and modest personality. She is also not your typical protagonist, as she enjoys focusing on the small moments of life and the happiness that comes along with it.

Moreover, the character development in Slime Taoshite 300-nen is notable, with side characters receiving adequate attention and their unique story arcs. Each character is developed in its way, with humorous quirks and flaws that allow readers to relate to them. The series’ storyline is not only fresh and innovative, but the world-building is also exceptional.

Another contributing factor to the manga’s appeal is the art style. The charming illustrations complement the storyline, bringing the fantastic world to life. The colouring and character designs are creatively done with vibrant and unique features, giving Slime Taoshite 300-nen its distinctive look and feel.

Overall, Slime Taoshite 300-nen has succeeded in captivating the hearts of manga readers with its combination of humour and heart. The series is a joy to read, and its popularity shows no signs of slowing down. It is undoubtedly one of the most successful and beloved manga series in recent years.



Slime Taoshite 300-Nen is a must-read manga for fans of the fantasy genre who crave a delightful tale about mystical beings living harmoniously in a wondrous world. The manga’s light-hearted story and comedic elements offer an enjoyable experience for all readers. The manga’s fascinating storyline, well-written characters, and beautiful artwork are all standout attributes that make it an enjoyable read. By the end of your journey with Azusa and her quirky friends, you’ll be left eagerly anticipating the next volume.

If you’re interested in checking out Slime Taoshite 300-Nen, you can read it online on websites like Amazon, Manga Rock, and Crunchyroll. You can also purchase physical copies from book retailers like Barnes & Noble, Amazon, and Right Stuf Anime. It’s worth noting that Slime Taoshite 300-Nen is a relatively new manga, so not all volumes may be available in print just yet.

So, what are you waiting for? Give Slime Taoshite 300-Nen a try and enter the enchanting world of magical beings, hilarious hijinks, and heart-warming friendships. We guarantee you won’t regret it!