Ysolmera

Yamato Kisaragi died saving a stranger.

He awakens in the ashes of a massacred village, reborn in the body of a five-year-old boy and stranded in Ysolmera—a world of classes, guilds, warring kingdoms, and Dungeons that can break open without warning.

The only thing that awakens with him is a system.

System Sight reveals patterns no one else can see. World Designer allows Yamato to draft structures, techniques, and even rules. But it offers no effortless power. Every design requires constraints. Every improvement carries a cost. And the system has already begun analyzing things Yamato never gave it permission to touch.

His first protector is Garrick, a reclusive veteran once feared as the Old King. Garrick understands how monsters hunt, how kingdoms hide their failures, and how dangerous a gifted child becomes once powerful institutions decide he belongs to them.

When a mutated creature recognizes Garrick and evidence points toward a Dungeon capable of learning from human decisions, Yamato’s arrival stops looking accidental.

To survive, he must become stronger without surrendering control of his own mind, uncover why the Dungeons are changing, and decide how much of himself he is willing to redesign.

Because in Ysolmera, power is never given without purpose.

And something beneath the world has already begun testing him.