The HON planner derives its name from the Japanese word for "book," showcasing a hardcover design reminiscent of classic books. The Slash series within the HON collection is a timeless rendition, available in dark navy and ivory adorned with a gold foil slash inspired by the forward-slash symbol commonly used in date writing. Wrapped in durable and high-quality cloth, the cover ensures longevity.

Crafted to evoke the feeling of carrying a cherished book, this series invites you to jot down notes whenever inspiration strikes. The A6 size features a dedicated page for each day, boasting a 3.7mm grid layout that has been meticulously researched for its ease of writing on a square grid.

Equipped with two attached bookmarks—one navy and one beige—marking frequently used pages becomes effortless. Additionally, an A6 pencil board featuring a built-in pen holder is an exclusive addition to the HON series. Utilizing durable and thin Tomoe River S paper, the thread-bound book design allows for easy writing, maintaining a lay-flat structure for added convenience.