JTOPIA, an online marketplace for luxury Japanese traditional crafts operated by IID, Inc. (Headquarters: Nakano, Tokyo), has begun selling pieces from Jingama, a master of Arita ware's Kakiemon-style overglaze painting, and Shinemongama, known for its yohen (kiln-transformation) technique, at ONE OFF TOKYO, a shop inside Daimaru Tokyo dedicated to one-of-a-kind traditional craft art.
Background of the Partnership
ONE OFF TOKYO, on the 10th floor of Daimaru Tokyo directly connected to Tokyo Station, is a select shop that embodies both the sustainability of Japan's traditional crafts and new possibilities for contemporary artists. It has offered one-of-a-kind traditional craft artworks since opening in April 2025, with a lineup centered on notable sword-making artists and furniture designers. In this central Tokyo location that draws visitors from across Japan and abroad, the shop is now also carrying a curated selection of traditional crafts chosen by JTOPIA.
JTOPIA has so far delivered works from kilns and traditional craftspeople nationwide through e-commerce. Through this new in-store partnership, visitors can now see and hold the texture and presence of these pieces in person — qualities that can be difficult to convey online. By combining the strengths of e-commerce and a physical shop, JTOPIA aims to bring the appeal of traditional crafts to a wider audience.
Featured Pieces at ONE OFF TOKYO
Jingama: Carrying On Arita Ware's Kakiemon-Style Overglaze Painting
Kakiemon-style Arita ware is known for vivid overglaze painting in red, yellow, and green set against carefully balanced negative space. Jingama carries on this tradition while creating designs suited to modern tables, earning wide acclaim.

Mug Cup, Fine Cherry Blossom Design — Created by Jingama's head, Yuji Obata, a master of Arita ware's overglaze painting technique, this piece draws on the beauty of negative space, rendering cherry blossoms across a milky-white porcelain surface with an ultra-fine brush for refined form paired with delicate color.
Shinemongama: A Kiln Known for Its Yohen Technique
Shinemongama has elevated the unexpected color changes that occur in the glaze during firing — known as yohen — into an art form. No two pieces share the same expression, shaped by the interplay of chance in the flame and the craftsmanship behind it.

Matcha Bowl "Yume" (Dream), Gold-Rimmed Finish — The chance effects of flame combine with the kiln's command of the yohen technique to produce a bowl whose coloring is never repeated. Rooted deeply in the tradition of tea ceramics, it holds a self-contained world within the palm of the hand.

Sake Cup Set, Sixteen Colors — A vividly colored set of yohen sake cups with a strong presence even in a quiet space, changing the mood of a room the moment it is set down.
Message from Shinemongama:
"In today's fast-changing business world, what people truly need is not fleeting decoration but the complete harmony reached by flame at its limit — a foundation for returning to genuine stillness. The matcha bowl 'Yume' and the sake cup set carry that world in the palm of a hand, or as the focal point of a room. We offer these pieces as a way to add quiet value to milestones in the lives of those shaping the next generation."
— 馬場 泰嘉, Chief Brand Officer, Shinemongama
Shinemongama official website: https://shinemongama.com/
Where to Buy
The Jingama and Shinemongama pieces are available at ONE OFF TOKYO inside Daimaru Tokyo, as well as through JTOPIA's online shop.
JTOPIA online shop: https://www.jtopia.co.jp/