01 · 石A whetstone is a stone. You draw a blade across it, again and again, and the blade remembers its edge.

02 · 刃Writing works the same way. The first draft is the blade. Returning to it is the stone.

03 · 研Whetstone is a writing application for people who come back to their work: drafts, revisions, and the long quiet labour of making a sentence true.