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Hello, it’s Shioguchi. I don’t really like my own handwriting and lack confidence in it, but there are reliable partners that for some reason make my handwriting beautiful.
I don’t know why, but the characters just come out so clean, without any effort. I bet everyone has one or two pens like that—a perfect match for your own hand. Today, I’d like to introduce the pens that make even someone like me, with very little confidence in my writing, feel like “I can write beautifully!”
Before I get to that, let me explain my personal pen preferences:
・Since I have small hands, I prefer a slim barrel.
・I like a fine pen tip (0.38–0.4 mm).
・I’m a fan of multi-color pens because I like to use different colors for different tasks.
Here are my three pen obsessions that meet these criteria and help tidy up my handwriting.
1. The Jetstream Edge 3 (0.38 mm)
I’ve loved using the Jetstream for years, but among them all, the “Edge” is my absolute favorite.
△I love the cool, sleek design, too.
Maybe it’s because the tip is so easy to see, making it simple to write tiny characters, or perhaps it’s the perfect weight of the body providing extra stability... I can’t quite put my finger on the reason, but whenever I use this, I feel like I can write sharp, crisp letters.
This pen defaults to a 0.28 mm refill, but I intentionally swap out the black ink for a 0.38 mm refill. This “tiny customization” seems to be the golden ratio for my writing comfort. I also use the single-color version, but I really love this multi-color type.
2. Style Fit (Gel ink 0.38 mm)
Next up is the “Style Fit,” which allows you to freely combine holders and refills.
I use a slim 3-color holder equipped with 0.38 mm gel ink refills. The body is so light that my hand doesn't get tired even after writing for a long time, and I found that my handwriting stays neat until the very end.
The ink itself is apparently the same as the Uniball Signo, but in my case, it just doesn’t work as well unless it’s in this specific holder. It’s truly strange how much handwriting can change just based on how a pen feels in your hand. I like this setup so much that I even made a second one with 0.5 mm gel ink refills in the same holder.
3. Style Fit (Jetstream Refill 0.38 mm)
Finally, we have another Style Fit holder, but this time it’s loaded with oil-based Jetstream refills.
△ It looks identical to the previous one. It’s like a game of “spot the difference,” but in all honesty, I can’t tell them apart when they’re lined up and often grab the wrong one!
The Jetstream 0.38 mm is my absolute favorite among all ballpoint pen refills, but there are very few slim, multi-color barrels available. For years, I’ve been searching for the one that felt just right, including the design.
Then, I recently discovered that a Jetstream 0.38 mm refill compatible with the Style Fit had been released. I swapped it in immediately, and as expected, it’s the best! Now that the “ideal holder” has met the “ideal ink,” my long journey of searching for the perfect multi-color Jetstream may have finally come to an end. It was quite a long road...
Looking at it this way, it seems I’m a big fan of Mitsubishi Pencil products! I also use and love the Uniball. I didn’t really realize it until I started writing this techo news.
Being able to write beautiful letters with a favorite pen... that alone lifts your mood and makes you want to open your techo more often, doesn't it?
Look forward to the next update!






