Six uni-ball One gel pens in a slim case, inked in colours taken from the Hobonichi Techo planner.

Hobonichi prints each month of the Techo in its own colour. TSUKI no IRO turns those twelve colours into ink, so the pen in your hand matches the page you are writing on.

Why people love it
• Uni-ball one pigment ink sits on the surface of the paper instead of sinking in, so a color stays deep and clear rather than looking washed out
• The 0.38 mm tip is fine enough for the small boxes on a daily page
• Each barrel is printed with its own month’s colour and the TSUKI no IRO logo
• The case is 196 x 120 x 8 mm, flat enough to carry alongside the planner
• A pocket on the back of the case takes sticky notes, stickers and other small bits

The twelve months are split into two sets of six, shown above.