That Time I Got Reincarnated as a Slime

• Author: Fuse
• Genres: Dị Giới, Chuyển Sinh, Light Novel
• Status: Completed
• Chapters: 250
• Rating: ★ 4.5 / 5
• Published: 2026-10-02

An isekai Transformation Like No Other

Who would’ve guessed that a 37-year-old corporate guy like Satoru Mikami would end up getting stabbed only to undergo a reincarnation as a literal jiggly slime in an isekai? Talk about a career change! Despite starting as the lowest of the low, he’s got some seriously broken cheats in the form of two Unique Skills: Great Sage and Predator.

Once he takes on the name Rimuru Tempest, the story kicks off into a hilarious yet high-stakes journey toward world domination. Don't expect non-stop brawling right out of the gate; the author does a fantastic job showing our hero gradually devouring and absorbing the abilities of other monsters to constantly evolve.

Building a Monster Empire

This isn't just your typical level-grinding story. It dives deep into the art of empire building. After striking up a bromance with the Storm Dragon Veldora, Rimuru Tempest starts recruiting different races, playing the diplomacy game, and basically founding a whole sovereign nation for monsters to call home.

The pacing is spot on, balancing flashy fight scenes with political maneuvering and territory development. Having to navigate threats from various outside forces keeps the plot gripping and prevents it from ever feeling stale.

Leveling Up the Power Scale

The skill system in this series is clearly structured and surprisingly deep. It’s not just random power-ups; things are ranked from Common Skills to Extra Skills, jumping up to Unique Skills born from personal desire, and reaching the pinnacle with the Ultimate Skills.

Watching Rimuru Tempest evolve from a tiny critter all the way to a True Demon Lord is pure satisfaction. Even though he’s got enough power to flatten his enemies, he stays a nice guy at heart—he only goes full savage when his people or his country are on the line.

The Wildest Crew of Subordinates

As cool as the protagonist is, the side characters are the secret sauce that kept me laughing out loud. The dynamic between Rimuru Tempest and his dragon buddy Storm Dragon Veldora is comedy gold, mostly thanks to their chaotic and impulsive vibes.

The monsters serving under him are all written with distinct personalities. You've got the surprisingly competent Gobta, the terrifyingly loyal and mysterious Diablo, the dangerously innocent Milim, and the over-the-top enthusiasm of Shion. They all make this world feel incredibly alive.

What the Community Says

• Webnovel: 10/10 (Based on 35 user reviews for the 159+ WN version, with 5 million readers as of October 2, 2026). Fans call it a "masterpiece" and "one of the best Isekai novels."
• Goodreads: 4.4/5 (From 4,573 ratings for Light Novel Vol. 1, checked October 2, 2026). This includes 2,518 five-star reviews (55%) and 1,356 four-star reviews (29%). Some readers even swear that the "web novel is so much better than the published version."

The Biggest Wins

• The skill system and power progression are detailed, logical, and super creative.
• Rimuru Tempest is incredibly overpowered but actually uses his brain, excels at diplomacy, and genuinely cares for his allies.
• Characters like Gobta, Diablo, Milim, and Shion bring a ton of heart and humor to the story.
• The plot perfectly blends action-packed leveling with kingdom management and monster politics.

A Couple of Heads-Up

• The sheer number of subordinates and skill names can feel a bit overwhelming at times.
• If you're only here for non-stop slaughter, the long stretches of political negotiation and city-building might slow things down for you.

The Squishy Sovereign’s Reign

With 250 main story chapters and 47 side story chapters already in the bag, this series is top-tier entertainment for anyone who loves the isekai genre. It’s got deep world-building, plenty of laughs, and is an absolute must-read.

Bottom line: This is a phenomenal isekai work. The climb from a humble slime to a True Demon Lord is incredibly satisfying and worth every second of your time.

Tags: reincarnation, slime, demon lord