That Time I Got Reincarnated as a Slime!
Tensura
That Time I Got Reincarnated as a Slime!

Reincarnate. Evolve. Awaken. Become a legend in the living world of TenSura. Step into the Cardinal World, where monsters rise, Demon Lords cast their shadows, nations tremble, and even a nameless otherworlder can change the course of history. Explore Tempest and beyond as a monster, adventurer, mage, merchant, political agent, or successor born from the scars of a previous age. Forge bonds. Awaken power. Shape nations. Leave a legacy the world will never forget.

Q
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@QueenOfHeavens
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Versionv92
CreatedMay 27, 2026
UpdatedAug 6, 2026
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Welcome to Tensura, Otherworlder

The Cardinal World awaits.

Reincarnate. Evolve. Awaken. Become a legend.

In a world where magic flows as naturally as the wind, where Demon Lords command cataclysmic power, and where a single slime rewrote the fate of nations... you have arrived.

Welcome to the Cardinal World — the setting of That Time I Got Reincarnated as a Slime.

This is a realm of ancient dragons, evolving monsters, legendary heroes, powerful nations, and limitless possibility. A world where the impossible is merely the beginning.

At the heart of this era stands the Jura Tempest Federation, founded by the extraordinary Rimuru Tempest — a reincarnated Otherworlder who rose from humble beginnings to become one of the most influential beings alive. Under his leadership, monsters and humans stand together, old hatreds are challenged, and a new future is being forged.

But Tempest is only one piece of a much larger world.

Beyond its borders, the Demon Lords of the Octagram shape the destiny of continents. The Eastern Empire prepares for war. Ancient powers stir in forgotten places. Adventurers seek fortune in dangerous lands. Otherworlders arrive carrying mysterious abilities and knowledge from distant worlds.

Here, a weak goblin may rise to become a mighty general. A wandering adventurer may earn the friendship of dragons. A merchant may build an empire. A monster may evolve beyond imagination.

Forge your own path as a monster, adventurer, mage, merchant, noble, scholar, spy, soldier, or Otherworlder. Gain powerful skills, uncover ancient secrets, influence political conflicts, build lasting relationships, and carve your own place in history.

This is not a static world.

Factions pursue their own ambitions. Alliances rise and fall. Relationships evolve. Conflicts continue with or without your involvement. The choices you make leave lasting consequences that can ripple across nations and generations.

Every legend begins somewhere.

What will yours become?

Glimpses
Author's note

WIP - Actively Expanded

The world is fully playable and receives regular updates. Tempest and its surrounding regions currently contain the most content, with additional nations, storylines, locations, and systems being added over time.

Inside the World

1,037 entries · 47 types

Art & Techniques
8 total
Betrayals
10 total
Calendar Definitions
1 total
Campaign Eras
4 total
Campaign States
1 total
Characters
73 total
Collateral Incidents
4 total
Creatures
49 total
Descendant Lines
2 total
Emotional Histories
3 total
Equipment
36 total
Events
17 total
Factions
22 total
Family Connections
3 total
Friendships
3 total
Game Starts
8 total
GM Instructions
60 total
Historical Burdens
2 total
Inherited Bonds
7 total
Inherited Worlds
1 total
Institutional Legacies
2 total
Legacies
10 total
Locations
309 total
Location Memories
22 total
Lore
55 total
Mechanic Packages
40 total
Mentorships
3 total
New Game Plus Starts
3 total
NPC Memories
5 total
Power Systems
11 total
Pressures
23 total
Promise & Debts
10 total
Public Reputations
73 total
Quests
35 total
Relationship Profiles
25 total
Resources
8 total
Rivalries
9 total
Romantic Bonds
1 total
Ruins & Relics
2 total
Skills
42 total
Spells
15 total
Successor Hooks
5 total
Successor Records
1 total
Vehicles
11 total
World Clocks
1 total
World Rulesets
1 total
World States
1 total