Behind the Box: Meet Daigo

April 17, 2026

I met the Daigo team at SF Stationery Fest earlier this month, and since then I've been using the isshoni. notebook and pen case cover myself. I wanted to share a bit about who they are, because I think it changes how you feel about holding these things.

Meet Daigo

Daigo is a Japanese stationery manufacturer based in Osaka, and their factory sits in Horyuji, a town in Nara Prefecture known for some of Japan's oldest temples. There's something fitting about that. Daigo has been making notebooks and planners there for decades, and the way they work reflects a similar orientation: slow, considered, and built to last.

Stopping the Line

What struck me most is that at multiple stages of production, they deliberately stop the line. After folding, after binding, after each structural step, the notebooks are pressed and left to rest overnight before moving forward. It might sound inefficient, but Daigo says this is a step that helps produce a better book.

The binding method is thread-sewn, section by section, which is what allows the notebook to open flat at 180 degrees. The endpapers are tested to withstand more than 10,000 open-and-close cycles. The paper itself is selected each production run in partnership with the paper mill, checked for smoothness and bleed resistance. And then there's the edge finishing: after the final trim, the pages are pressed while a craftsman hand-paints all three edges with a brush, then polishes them. It's a technique that hasn't changed over 50 years, and Daigo is one of the last factories in Japan still doing it in-house.

Most manufacturers outsource it. They never did.

About isshoni.

The isshoni. line is Daigo's stationery-for-working-life brand, and the concept behind it is simple: make the hours you spend working feel a little more like yours.

The isshoni. Number Notebook Grid is designed around the idea that notes shouldn't get lost, with every page numbered and an index at the front so you can actually find what you wrote. This notebook won a Good Design Award in 2022.

These notebooks are available in our April Box. Our order window close on the 20th. Subscribe to your Box Here

Thank you, as always, for being here. It means a lot to be able to share things I genuinely love with people who care about them just as much.

With love,

Paper Bento

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