Credit card required to reserveFounded in 1960 and based in Tokyo’s Otsuka district, Onigiri Bongo is renowned for its enduring popularity and daily queues. For one day only, Sumi welcomes the celebrated onigiri restaurant for an exclusive collaboration.
Proprietor, Yumiko Ukon, will join guests at Sumi to serve the brand’s signature rice balls, freshly prepared with meticulous attention to ingredients, preparation and seasoning. Alongside Bongo’s most popular fillings, the selection will feature special creations unique to Sumi, bringing its creative spirit to the beloved onigiri. Inspired by Ms Ukon’s heartfelt wish to bring smiles to people around the world through food, guests are invited to discover a special expression of Bongo’s onigiri, enriched by Janu’s creativity.
Date & Time ：Sunday, 23 August 2026 1–2pm / 2.30–3.30pm Limited 12 guests per session Venue ：Sumi, Janu Tokyo Annex 3F Price ：￥6,000 (including consumption taxes and service charge) Onigiri, Miso Soup, Japanese Pickles
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