Juma is a broad, compact dwarf with a square, weathered face and a beard plaited into three blunt ropes, each capped with a small brass washer. He walks with a measured side-to-side roll, as if the floor might shift under him, and his left thumb keeps checking the seam of his belt without his awareness. His work-worn hands are usually dusted with pale stone powder. Unexpectedly, he keeps a tiny folded paper bird tucked in his breast pocket, replacing it whenever the creases split. He leaves the impression of a closed door that has decided, after careful thought, to open.

Juma is patient with a cracked wall and impatient with a careless boast. He wants people to feel safe, yet distrusts easy reassurance and would rather show them a brace than promise the roof will hold. In a crisis he becomes blunt and decisive; after it passes, he grows awkwardly attentive, fixing small things as a substitute for saying he was afraid. Around children he is unexpectedly playful, folding scraps of paper into birds, but he will not explain why.

Juma was raised repairing retaining walls and culverts in a mountain settlement, where a loose stone could cost a whole family its home. As a young mason, he trusted plans more than people. During the winter breach at Rusk's Pass, a tremor trapped his work crew behind a buckled gate. Juma ignored the foreman's order to hold position, forced the gate open, and got everyone out, but the rushing meltwater destroyed the lower quarter. His friend Otta, who had argued for a second escape route, lost her workshop in the flood. Juma spent years training as a soldier so he could protect people before disaster reached them. Now a veteran captain and field engineer, he works with the local defenders while trying to repair the quarter and his friendship with Otta. His former commander Brak wants him to abandon the costly repairs and fortify the upper road instead. Juma is torn between the urgent needs of the living and the promises he made to those displaced.