Founded in 1986 by internationally acclaimed designer and book artist Katsumi Komagata, ONE STROKE is a publishing house and design studio.

Following the birth of his daughter, Komagata began creating books as a way to explore the expressive possibilities of paper as a material. Since then, he has produced numerous picture books with unconventional forms that challenge fixed ideas of what a book can be.

His works are open to everyone, including children, adults, and people with disabilities, and have received wide international recognition. Through collaborations with institutions such as the Museum of Modern Art (MoMA) and Hermès, his activities expanded beyond publishing into broader fields of art and design.

Komagata also served as an international jury member of the Bologna Children’s Book Fair. In addition, together with independent publishers from other countries, he continuously presented the four-country collaborative booth “Small World” at the fair, actively sharing its philosophy and fostering international dialogue.

Today, his daughter Ai Komagata carries on this philosophy. Through exhibitions, lectures, and workshops, she continues to expand the world of ONE STROKE and explore new ways of experiencing books.