At first glance, Ishitomi’s porcelain appears decorative. Look again, and a deeper order reveals itself. His process begins with pencil-drawn grids on soft chikushi paper, laying a foundation for balance. Within each section, he hand-paints intricate patterns using a brush trimmed to fine points. The lines are made with black gosu, a pigment known for its density and difficulty, especially in fine, clean strokes. Unlike fluid red gosu, the black demands control, and that tension informs the movement of each piece.

As he paints, Ishitomi responds intuitively to the developing composition, allowing sections to shift and evolve. What may begin as a petal might resolve into a starburst or a cellular pattern. Each layer is applied and fired before he adds more: matte textures, new patternwork, or flashes of precious metal. Many works go through multiple firings, with gold often requiring three to achieve a lasting gleam. Platinum, which reflects light more softly, is applied with equal precision but fired at slightly lower temperatures to preserve its brightness.

One signature of Ishitomi’s recent work is the subtle use of raised white enamel (shiromori) to elevate the gold or platinum motifs. These barely visible ridges give metallic embellishments a faint lift, allowing them to catch light at changing angles. 

While his techniques are grounded in traditional Kutani methods, Ishitomi's interpretation feels contemporary, restrained in color, exacting in form, and cool in presence. His vases and vessels often feature a muted palette of black, white, and gold, occasionally softened with a gentle lavender tone. Together, these elements create works that bring a glow to modern interiors while honoring the layered craftsmanship of Kutani ware.