Onigiri Bongo at Sumi
Founded in Tokyo’s Otsuka district in 1960, Onigiri Bongo is renowned for its enduring popularity. For one day only, proprietor Yumiko Ukon visits the hotel for a special collaboration featuring Bongo’s signature onigiri and exclusive fillings created by Sumi’s chefs, creating a joyful culinary experience shaped by Janu Tokyo’s spirit of connection.
Available exclusively on 23 August 2026, with two seatings at 1pm and 2.30pm.