Written by: Jin Fujisaki / Published: 2026-02-23
Drawing a freehand straight line with a highlighter is surprisingly difficult. More often than not, the line ends up wavy or slanted, leaving your notes looking messy when you review them later. But the tip of Pilot's "KIRE-NA" features a groundbreaking plastic component called the "Kichinto Guide."
When this guide rests flat against the paper, it forces the angle of the tip and the line width to stay perfectly stable. Even without a ruler, you can draw astonishingly straight lines that look as though you used one. What's more, the tip is made of a special nylon chip designed to flex well, so even on "curved" surfaces like the inner gutter of a thick reference book, the pen never lifts off the paper and you can draw a clean line all the way through.
| Pigment Ink That Dries in 1 Second. No More Smudged Hands or Rulers
image Askul
The biggest source of stress with highlighters has to be smudging the ink with your hand right after drawing a line, leaving your notes streaked and dirty. KIRE-NA solves this problem with brute force, thanks to its proprietary "fast-drying pigment ink."
Just as the manufacturer claims, on copy paper it really does dry in "about 1 second." Even if you rub it with your finger immediately after drawing a line, it doesn't smear at all. On top of that, thanks to the aforementioned "Kichinto Guide," the tip isn't pressed too hard against the paper, which dramatically reduces the "reverse bleed" that happens when the highlighter drags and smudges the mechanical pencil or ballpoint pen text underneath. Even when you use a ruler to draw a line, the ink doesn't easily transfer onto the ruler—it's the ultimate spec, completely committed to "not making a mess."
| A Sponge-Like Structure That Absorbs the "Final Ink Pool"
image Impress Watch
Have you ever experienced ink pooling up at the very "end" of a highlighter stroke and bleeding through to the next page? KIRE-NA didn't overlook even this niche and annoying problem.
The nylon chip at the tip is designed to soak up the excess "ink pool" at the end of your stroke, just like a sponge. From start to finish, you get a beautifully "uniform" line in the truest sense of the word. This obsessive attention to detail is precisely why it took home the grand prize at the 2025 Stationery Shop Awards.
| From Soft Pastels to Classic Hues. A Flawless "Twin Spec"
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KIRE-NA features a twin-cap design with a broad tip (3.3mm) for marking and a fine tip (0.5mm) for writing. The lineup includes 10 colors total: 5 classic "basic colors" like the timeless pink and yellow, plus 5 "pale tone colors" (such as warm gray and pale blue) that are easy on the eyes and blend nicely into planners.
Use the broad tip to highlight key terms in your textbook, and the fine tip to jot down supplementary notes. Since the ink dries quickly and doesn't bleed through, it pairs exceptionally well with thin paper like the Hobonichi Techo. It's a perfect fit not only for students studying, but also for adult task management and professional certification prep.
| Summary: "Focus on Writing" for Just 132 Yen
image Askul
Despite packing in all these innovative features, the price is just 132 yen (tax included). Even buying the 5-color set comes to only 660 yen—a price point identical to traditional highlighters. You can't help but feel the pride and determination of a stationery maker in this pricing.
"Draws straight, doesn't smudge, doesn't bleed through." Just these few things alone can dramatically boost your motivation for studying or working. If you haven't tried one yet, head to your nearest stationery store and experience the "KIRE-NA" (clean) feel for yourself.
