Slime Manga in 2025: The Ultimate Guide to That Time I Got Reincarnated as a Slime

If you thought being reborn as a slime meant a boring new life—think again. The Slime manga is one of the most entertaining, strategic, and visually rich isekai stories of the decade. Whether you're new to Rimuru’s world or coming from the anime, this guide will help you get started in 2025.

What Is the Slime Manga?

The Isekai Twist That Started It All

That Time I Got Reincarnated as a Slime (Tensei Shitara Slime Datta Ken) follows a salaryman who dies and is reincarnated in a fantasy world—as a slime named Rimuru Tempest. With powerful abilities and a diplomatic heart, Rimuru transforms the world around him.

Light Novel, Web Novel, and Manga Differences

• Web Novel: Original online version
• Light Novel: Expanded, canonical version with illustrations
• Manga: A clean adaptation of the light novel with stunning visuals

Why the Slime Manga Is So Popular

Refreshing Take on the Isekai Genre

It’s not just about overpowered MCs—it’s about community-building, strategy, and world peace (with the occasional monster battle).

Rimuru Tempest – A Lovable Overpowered MC

He’s a blob with style—humble, smart, and absurdly powerful. Rimuru's journey from reincarnation to Demon Lord is as fun as it is inspiring.

Main Characters in the Slime Manga

• Rimuru Tempest: The protagonist and leader of Tempest
• Benimaru: Fire-wielding warrior and Rimuru's right hand
• Shuna & Shion: Ogres turned trusted allies
• Great Sage: Rimuru's internal AI companion
• Milim Nava: A childlike but terrifying Demon Lord

Where to Read the Slime Manga Online Legally

Kodansha USA (Digital & Print)

Kodansha is the official English publisher. You can buy both digital and paperback editions.
👉 Visit Kodansha USA

Crunchyroll Manga and BookWalker

Crunchyroll often includes early chapters. BookWalker is excellent for bundles and discounts.

Kindle, ComiXology, and Other Platforms

Read on your phone or tablet with Kindle or ComiXology apps. Seamless UI and crisp pages.

Slime Manga vs Anime: Which One Is Better?

What the Manga Covers That Anime Misses

More internal dialogue, side scenes, and smoother pacing. Manga lets the world breathe.

Pacing, Art, and Lore Differences

Manga: Steady flow with detailed art.
Anime: Action-packed, but faster-paced and sometimes rushed.

How Many Volumes and Chapters Are There?

Current Volume Count in 2025

Over 25 volumes are available, with monthly chapter releases ongoing.

Is the Manga Still Ongoing?

Yes! It’s actively adapting the post-Demon Lord arcs from the light novel.

Manga Arcs You Shouldn't Skip

• Founding of Tempest: Rimuru builds a monster nation
• Orc Disaster Arc: War, strategy, and new alliances
• Demon Lord Ascension Arc: Rimuru’s emotional and power evolution
• Walpurgis: Demon Lord council and political intrigue

Art Style and Visual Appeal

Clean Panels and Character Designs

Taiki Kawakami’s art is polished and consistent, capturing both tension and comedy beautifully.

Action Scenes in the Manga

Combat flows naturally, with magic effects and attacks easy to follow and impactful.

Slime Manga Spin-offs and Side Stories

The Ways of the Monster Nation

A slice-of-life comedy set in Tempest. Great for light-hearted, daily adventures.

Trinity in Tempest

Follows three female adventurers navigating life in Rimuru’s kingdom. A fun side quest!

Why You Should Read the Manga Even If You Watched the Anime

Extra Details, Dialogues, and Character Moments

Conversations and emotional beats that were skipped or compressed in the anime are preserved here.

More Lore and Worldbuilding Depth

Want to know how magic works? How the kingdoms relate? The manga gives all that and more.

Conclusion

That Time I Got Reincarnated as a Slime is far more than a typical isekai. It’s political, personal, and powerful. With brilliant artwork, well-paced storytelling, and lovable characters, the manga is a must-read—even for anime fans. If you haven’t yet, dive in and experience Tempest the way it was meant to be told!

FAQs About the Slime Manga

• Is the Slime manga finished? No, it’s still ongoing in 2025.
• Where can I read it legally? Kodansha USA, Kindle, BookWalker, Crunchyroll Manga, and ComiXology.
• Is the manga different from the anime? Yes—more detailed and often includes skipped scenes.
• How many volumes are there? Over 25 volumes as of 2025.
• What’s Rimuru’s power? He can absorb, analyze, and copy skills—making him nearly unstoppable.
• What are the best arcs? Orc Disaster, Demon Lord Ascension, and Walpurgis.
• Can I start the manga without watching the anime? Absolutely—it’s a great entry point.
• Are there spin-offs? Yes—The Ways of the Monster Nation and Trinity in Tempest.
• Where can I buy physical copies? Amazon, Barnes & Noble, and most major bookstores.