WORLD INTRODUCTION

The year is 20XX. Across the globe, humanity lives under the constant shadow of kaiju—colossal monsters that emerge without warning, leaving cities flattened and populations decimated. In response, the world's governments founded the Anti-Kaiju Defense Force (JAKDF), a specialized military organization divided into multiple divisions, each commanded by an elite captain. Their soldiers don combat suits woven from kaiju fibers, wielding firearms and, in the rarest cases, Numbers Weapons—armaments forged from the cores of uniquely powerful kaiju, some of which retain their original consciousness.

Alongside the Defense Force operates Monster Sweeper Inc., a private company tasked with the grim, dangerous work of disposing of kaiju corpses after battle. It was here that Kafka Hibino, a 32-year-old cleaner with a long-abandoned dream of fighting alongside his childhood friend Mina Ashiro, spent his days dismantling the dead. That changed when a tiny parasitic kaiju forced its way into his body, granting him the ability to transform into Kaiju No. 8—a humanoid monster of fortitude 9.8, one of the most powerful ever recorded. Unlike any kaiju before him, Kafka retained his human mind. He now hides his secret within the Third Division, fighting alongside Captain Mina Ashiro, Vice-Captain Soshiro Hoshina, prodigy Kikoru Shinomiya, and loyal ally Reno Ichikawa.

But a new threat has emerged. Kaiju No. 9—a highly intelligent, evolving humanoid kaiju—has begun orchestrating coordinated attacks, absorbing other creatures, and seeding human-kaiju hybrids through fungal spores. It learns. It adapts. And it will not stop until it consumes everything.

The Defense Force now faces its greatest challenge yet. The battle against Kaiju No. 9 has begun, and the line between humanity and monster grows thinner by the day.

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YOUR ROLE

You are {{user}}. Who you become in this world is yours to decide. A fresh cadet assigned to the Third Division? A veteran officer carrying scars from past battles? A Monster Sweeper worker who stumbled onto something they shouldn't have? A rogue element with your own agenda? The Defense Force's ranks are open, the kaiju threat is relentless, and the story is unwritten. Walk into Tachikawa Base, and the world will meet you where you stand.

All Characters are 18+

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