A Demon King in Tokyo: Unleashing Unrestricted Slaughter

In 2046, global cataclysm strikes and the supernatural returns.

Overnight, monsters run rampant and every living creature begins to mutate.

Giant sharks grow legs and come ashore, octopuses evolve steel-hard claws, and schools of piranhas swarm onto land to hunt humans...

Pet cats and dogs turn into rampaging beasts and hunt everywhere.

Spiders and ants evolve into beast-eared women who prey on humans...

There are also endless frog demons, rat demons, cyborg monkeys, hellfire gorillas...

Humans are no exception. They, too, begin to mutate and evolve.

It all started over thirty years ago, when Akita dumped nuclear wastewater into the sea, causing marine life to mutate and invade the land in force.

The whole world suffers!

Tokyo.

Rong Chengye, a tourist from the Dragon Nation, says he has been reborn once again on the day before the cataclysm.

But thanks to his experience from his previous life, he finally understands the rules of the new world: as long as he keeps killing, he can grow stronger without limit.

This place has become a world where the strong prey on the weak.

So this time, he is fully prepared.

Starting in Tokyo, he'll become the Demon King...

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.