by Blue Ember
Dungeons appeared without warning. Monsters followed. Hunters rose to fight them. Ranks were assigned. Guilds were formed. Power was measured. But no one asked the right question. What lies at the bottom? Ren Kurotsuki is officially a C-Rank Diver — competent, quiet, replaceable. He clears dungeons efficiently and avoids attention. To the guild registry, he’s nothing special. But three years ago, during a dungeon collapse that killed forty-two hunters, Ren was the only survivor. And the dungeon spoke to him. Now, when he descends, something responds. A hidden metric — Synchronization — begins to rise. The deeper he goes, the more the dungeon changes. Traps become deliberate. Monsters adapt. Structures shift with intent. And at certain thresholds, the dungeon stops trying to kill him… …and starts testing him. Because dungeons are not random disasters. They are layered. They are selective. And something ancient waits at the lowest depth — watching for someone capable of reaching it. As Synchronization climbs, Ren begins to overlap with the dungeon itself. At higher percentages, monsters hesitate. Structures reveal their weak points. The abyss no longer sees him as prey. It sees him as a candidate. Guilds measure rank. The dungeon measures depth. And Ren Kurotsuki intends to descend until there is nothing left beneath him. Even if the abyss decides to keep him.
No streak history
