This work is an immersive projection mapping piece that sets out from the wall of the Tokyo Metropolitan Government Building, the heart of Tokyo, and takes the viewer on a journey through the “evolving city of Tokyo” from the perspective of a single person. Depicted through three-dimensional, geometric, and organic imagery, it portrays an individual as a living cell within Tokyo, merging into the core of Metabolist architecture and continually growing, dividing, and being rebuilt together with the city and its music.

At Expo 2025 Osaka-Kansai Expo, in the dedicated theater “499 Seconds: My Gattai” within the Signature Pavilion “Shin-Life Adventure” produced by Shoji Kawamori, 30 participants don VR headsets equipped with cameras and, through VR and MR technologies, simultaneously experience a universe-scale food chain—traveling beyond time and space from memories of the past in an immersive exhibition available nowhere else in the world. Through the “universe-scale food chain” envisioned by Shoji Kawamori, creator of numerous sci-fi works, visitors can experience the pavilion’s theme: “Life is fusion and transformation!” We were responsible for the direction and animation of this hyperspace theater “499 Seconds: My Gattai,” and, using spatial audio technology developed by SoVeC Inc. and Terasaka Bio Inc., we combined it with spatial audio produced by Sony PCL Inc. (hereafter Sony PCL), delivering a completely new audiovisual experience unlike anything before.

What I first felt when I listened to the song was a sense of floating in the melody, so I focused on creating visuals of fluffy things drifting freely on the wind, while abstractly depicting the “I” in the lyrics and making the animation move comfortably in sync with the melody. It really felt spot on. And when you’re simply having fun, feeling cute, liking something, or completely absorbed in it, you naturally end up smiling, don’t you? With those feelings in mind, I created this video.

We created a pure musical video featuring the sounds performed by the piano four-hand unit EIKO+ERIKO together with two butterflies.