Inazuma Inc. announced today that ePaperCraft SHIRYU, a digital papercraft design software created by Takahiro Yonemura, Ph.D. (Engineering), is now available worldwide on Steam, following its release on the Microsoft Store. The software allows users to design 3D models on a PC, automatically unfold them into printable templates, and build the finished object with paper, scissors, and glue.
SHIRYU ships with more than 70 ready-to-build models, and users retain the right to use their original creations commercially. The software is categorized under Design & Illustration, Education, and Utilities on Steam, and is available for Windows.
The original version of the software, known in Japan as “Paper Dragon,” was selected as a Jury Recommended Work at the 10th Japan Media Arts Festival, hosted by Japan’s Agency for Cultural Affairs. Its underlying research was published in the NICOGRAPH technical journal. The Steam release is an expanded successor refined over more than two decades of continuous development. It has been used successfully by elementary school students, yet leaves room for careful manual work and inventive model design by hobbyists, educators, makers, and artists.
Notably, no generative AI was used to create the included models or the program code. In an era of instant generation, SHIRYU is built around the opposite pleasure: designing something yourself, printing it, and holding it in your hands.
Yonemura is no newcomer to the American market. He is the author of the sci-fi manga “Beast Code” (eigoMANGA, 2022) and “Recycled Brain” (eigoMANGA, 2025-2026), both published commercially in the United States and covered by Anime News Network. His English-language book “The Metal Brain” was distributed to 12 countries under a Japanese government support program in 2019. He holds a Ph.D. in Engineering and lectures at a university of science and technology in Japan.
“People ask why an engineering PhD writes manga and folds paper. I say: a scientist’s job is to turn imagination into something real. SHIRYU turns a screen into scissors, glue, and a creature on your desk,” Yonemura said.
The software is available on Steam and the official website.
