Utsuroi is a poetic Japanese word that means change, transition, transformation, movement, or passage. The Utsuroi Lab creates Utsuroi gadgets by inventing novel technologies and finding multi-cultural contexts. This lab was founded in 2019 by an artist Yuichiro Katsumoto at the Schol of Science and Technology, Tokyo Denki University.


Aura Flow

A device that gives aura-like effects to cartoon figures.

Isami Sakata, Hikaru Ito, Ibuki Hashimoto, Naoya Hatta, Yuichiro Katsumoto
2022 - 

Watch video (Youtube) / Read paper (in Japanese)

Chari-Key Master

A wearable toy to prevent losing bicycle keys.

Hirotaka Fusegi, Ryota Ogawa, Kouhei Ootahara, Tatsuya Matsuzaki, Ayaka Nagahori, Yuichiro Katsumoto

Watch video (Youtube) / Read paper (in Japanese)

Hinemosu 30

A display for kinetic typographies and motion graphics by twisting elastic bands.

Yuichiro Katsumoto
2023 -

Watch Video (Vimeo) / More info 


Animatronics study for artificial flowers.

Ryota Nakatama, Daiki Inoue, Yuichiro Katsumoto

Read paper (in Japanese)

Color-Changing Lure

To efficiently catch trout we invented a lure with a lenticular lens.

Shunta Koike, Takeshi Kurosaki, Kouta Tanaka, Yuichiro Katsumoto

Read paper (in Japanese)


A practice of making animal figures with soft actuators.

Kosei Tsuruno, Soma Teraoka,  Takumi Furuya, Yuichiro Katsumoto

Neo Shishi-Odoshi

A sound-changing Shishi-odoshi that attracts the public space.

Hirotaka Fusegi, Kaiki Kubo, Koichiro Kanai, Yuichiro Katsumoto

Read paper (in Japanese)

Super Hen-Scene

A hair stand-able bust by tendon-driven mechanism with love for Dragon Ball.

Isami Sakata, Ryo Okamura, Taku Yokoyama, Yuichiro Katsumoto

Read paper (in Japanese)

Fruits of Light

Lightings that remind the pleasure of eating fruit. We designed two types of lighting with grape and orange motifs.

Tomoya Takase, Shota Nakao, Kota Yamashita, Yuichiro Katsumoto

Watch video (Youtube)

Ayatsuri Daruma

An animatronic Daruma doll with the aim of making traditional crafts more accessible to people today.

Nanako Imanari, Riku Sakamoto, Yuichiro Katsumoto


Self-inverting kinetic arts that depict our boundaries and sudden change of attitudes.

Yuichiro Katsumoto
2020 - 2021

Watch video (Vimeo) / More info