thumb|Exterior of the Signature Pavilion null² by Yoichi Ochiai at [[Expo 2025]] thumb|Interior of null², Expo 2025 Osaka, Kansai (2025)
thumb|Exterior of the Signature Pavilion null² by Yoichi Ochiai at [[Expo 2025]] thumb|Interior of null², Expo 2025 Osaka, Kansai (2025)
null² (, pronounced Nurunuru) was a Signature Pavilion at the Expo 2025 Osaka, Kansai, Japan, held on Yumeshima Island in Osaka. It was produced by media artist Yoichi Ochiai as part of the official thematic projects of the Japan Association for the 2025 World Exposition.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).