Prologue

A certain Dungeon Core known by the number 629 was resting on a grassy plain as he managed his dungeon. He was a rabbit-type Dungeon Core with orange fur, and the first floor of his dungeon was in fact the grassy plain in question.

“Gosh. Where’re all the adventurers? This is super boooring,” Dungeon Core Number 629 said while bouncing around with three other rabbits. The other rabbits were technically dungeon monsters. Unlike normal rabbits, they had a single horn on their foreheads which marked them as Horned Rabbits, though that was about the only thing that separated them from normal rabbits.

“I got a grasshopper! Look, loook!” a rabbit said.

“Nom nom nom... Grass is tasty!” another said.

“Gaah! Who bit my eaaar?!” the third said. They were all having fun playing together. It was a very heartwarming sight.

Language-wise, Core 629 could understand them more than well enough thanks to being a rabbit-type Core himself. The only problem was that they weren’t too intelligent and didn’t always listen to his orders.

“Come on, you guys. Do your job and patrol the dungeon! Don’tcha want to eat carrots?”

“But I meaaan. You’re not m