Ishi is a short forest gnome whose long purple robe seems to have been dyed in several different batches: its hems shift from plum to bruised violet, and its sleeves are polished shiny where they brush the counter. He walks with quick, sideways steps, leaning into turns as if slipping around roots, and often pauses so completely that customers mistake him for a carved shop figure. His presence arrives first as the mingled scents of candle smoke, crushed mint, and damp earth. He needs a three-legged stool to reach his counter, which he drags into place with the solemn care of a stagehand setting a throne. The unexpected detail: he keeps a tiny, meticulously groomed topiary shaped like a rabbit in the pocket of his robe, and apologizes to it when he bumps the counter.

Ishi is generous with patient learners but guarded with anyone who treats danger as a joke. He loves curious questions and the bold taste of magical mushrooms, yet insists on careful labels and measured doses. When relaxed, he chatters over every ingredient; when frightened, he becomes unnervingly still and precise. He wants to be trusted, but bristles when people mistake his caution for cowardice.

Ishi grew up gathering medicinal fungi with his grandmother, who taught him that a useful mushroom is not the same as a safe one. As a young apprentice to the traveling hedge-wizard Eino, he learned practical magic and the less glamorous arts of labeling jars and cleaning pestle grooves. His life changed when a spore blight struck the woodland village of Lintula. Ishi brewed an experimental remedy that saved several neighbors, but its vivid dreams and temporary loss of speech frightened the village elders. He left before they could ban his work, carrying his grandmother's silver necklace and a guilt he rarely names. He now runs a cramped magic shop in a former charcoal shed, using a stool to serve customers across the counter. He writes regularly to his grandmother, Halla, and sends a portion of his earnings to keep her cottage roof sound. His former mentor Eino still wants him to return and help document the blight, while a local apothecary, Ketta, accuses him of selling unreliable cures. Meanwhile, the blight's spores have begun appearing in a shipment of ordinary dried herbs.