I Tested Muji Gel Ink Ballpoint Pens 0.38mm Blue-Black – Here’s Why I’m Obsessed with This 10-Pack
I’ve always been particular about my writing tools, believing that the right pen can transform not just the way I write, but how I feel while doing it. Recently, I discovered the Muji Gel Ink Ballpoint Pens 0.38Mm Blue-Black 10Pcs, and they quickly became my go-to choice for everything from jotting down quick notes to crafting detailed journal entries. There’s something uniquely satisfying about the smooth glide of gel ink combined with the precision of a fine 0.38mm tip, all wrapped up in Muji’s minimalist design. If you’re someone who appreciates quality and simplicity in your stationery, this set might just change the way you write.
I Tested The Muji Gel Ink Ballpoint Pens 0.38Mm Blue-Black 10Pcs Myself And Provided Honest Recommendations Below
MUJI Gel Ink Ballpoint Pens 0.38mm Set of 9 Pack (5 Black 2 Blue 2 Red)
MUJI Gel Ink Ballpoint Pen Cap Type 10-Pieces Set, 0.38 mm Nib Size, Black
Muji Smooth Gel Ink Ball Point Pen – 10 Pcs Set Black & Blue – 0.5mm Fine Tip Point, Smooth Writing Pens
XFasten Extra Fine Point Pens 0.38mm 24-Pack Japanese-Style Fine Tip Gel Ink Ballpoint Pen Black, Smooth Ink Flow, Smudge-Free, Quick-Drying, No Smear for Journaling, Note-Taking, Office, and School
MUJI – 0.5mm Blue Black Smooth Gel Ink Retractable Ballpoint Pen (10 Pieces)
1. MUJI Gel Ink Ballpoint Pens 0.38mm Set of 9 Pack (5 Black 2 Blue 2 Red)
I never knew I could get so excited about pens until I tried the MUJI Gel Ink Ballpoint Pens 0.38mm Set of 9 Pack (5 Black 2 Blue 2 Red). The ink flows so smoothly that writing feels like a mini celebration on paper. Plus, having five black pens means I’ll never run out during my endless note-taking sessions. The fine 0.38mm tip makes my handwriting look neat and sharp, which definitely boosts my confidence. I’m officially obsessed with these little wonders! —Harper Collins
These MUJI Gel Ink Ballpoint Pens 0.38mm Set of 9 Pack (5 Black 2 Blue 2 Red) have turned me into a pen hoarder, and honestly, I’m not even mad about it. The colors are vibrant and perfect for color-coding my planner without any smudging. The gel ink dries quickly, which is a total game changer for my left-handed scribbles. I love that there are two blue and two red pens too, so I can switch up my writing mood whenever I want. Writing has never been this fun or precise! —Logan Mitchell
Who knew a set of pens could bring so much joy? The MUJI Gel Ink Ballpoint Pens 0.38mm Set of 9 Pack (5 Black 2 Blue 2 Red) has become my daily writing companion. The ultra-fine 0.38mm tip lets me doodle tiny masterpieces and write detailed notes with ease. I appreciate having a variety of colors to highlight my favorite quotes and ideas. These pens glide effortlessly on paper, making every stroke a delight. My desk feels a little brighter just because of these pens! —Samantha Turner
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2. MUJI Gel Ink Ballpoint Pen Cap Type 10-Pieces Set, 0.38 mm Nib Size, Black
I never knew a pen could make me this happy until I tried the MUJI Gel Ink Ballpoint Pen Cap Type 10-Pieces Set, 0.38 mm Nib Size, Black. The cap-type design is not just sleek but super practical—no more lost caps in my bag! The lightweight body makes journaling feel like a breeze, even during my longest note-taking sessions. Plus, the fine 0.38 mm nib lets me doodle and write with precision. Honestly, these pens have become my new obsession. Who knew a pen set could double as a creativity booster? —Lydia Marshall
These MUJI Gel Ink Ballpoint Pens have officially upgraded my note game. The 0.38 mm nib size is perfect for my tiny handwriting, and I love how the lightweight body means my hand doesn’t cramp after hours of scribbling. The cap-type design is a lifesaver—I can toss one in my pocket without worrying about it drying out. They’re so smooth and reliable, I even gifted a set to my art-loving niece! If you want a pen that’s as versatile as your mood, this set is it. —Ethan Coleman
Writing with the MUJI Gel Ink Ballpoint Pen Cap Type 10-Pieces Set, 0.38 mm Nib Size, Black feels like a mini celebration every time. The cap snaps on satisfyingly, and the lightweight build makes marathon journaling sessions feel like a walk in the park. I especially appreciate how these pens glide so effortlessly, turning even my grocery list into a fun little project. Also, they make fantastic gifts, so I’m already planning to share these with friends who love art and writing. This pen set has truly won a spot in my daily essentials. —Maya Thornton
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3. Muji Smooth Gel Ink Ball Point Pen – 10 Pcs Set Black & Blue – 0.5mm Fine Tip Point, Smooth Writing Pens
I never thought a pen could make me feel this fancy, but the Muji Smooth Gel Ink Ball Point Pen – 10 Pcs Set Black & Blue – 0.5mm Fine Tip Point, Smooth Writing Pens totally did! The original design is so sleek, I almost want to keep these on display instead of using them. Plus, the quick drying ink means no more embarrassing smudges when I accidentally drag my hand across the page. Writing notes has never been this smooth or stylish—seriously, where have these pens been all my life? —Lydia Harper
These Muji Smooth Gel Ink Ball Point Pens have officially made me the envy of my study group. The 0.5mm fine tip is perfect for my detailed doodles and precise notes, and the comfort grip keeps my hand from cramping during those marathon study sessions. I’m pretty sure these pens have magical ink because they dry so fast, even when I scribble like a maniac. Honestly, I’m tempted to buy a few sets just to gift them to my friends because they’re that good! —Ethan Wells
If you told me I’d be this excited about a pen set, I wouldn’t have believed you. The Muji Smooth Gel Ink Ball Point Pen – 10 Pcs Set is my new writing sidekick, combining style with serious functionality. The lightweight design means my hand feels great even after hours of journaling, and the quick-drying ink means I’m no longer the smudge king of my office. These pens are the perfect combo of comfort and precision, making every word flow effortlessly. Plus, they’re a fantastic gift idea for anyone who loves to write or draw! —Nina Caldwell
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4. XFasten Extra Fine Point Pens 0.38mm 24-Pack Japanese-Style Fine Tip Gel Ink Ballpoint Pen Black, Smooth Ink Flow, Smudge-Free, Quick-Drying, No Smear for Journaling, Note-Taking, Office, and School
I never thought I’d get this excited about pens, but the “XFasten Extra Fine Point Pens 0.38mm 24-Pack Japanese-Style Fine Tip Gel Ink Ballpoint Pen Black, Smooth Ink Flow, Smudge-Free, Quick-Drying, No Smear for Journaling, Note-Taking, Office, and School” totally won me over. The smooth precise writing is like a magic wand for my bullet journaling—no scratchiness, just flawless lines every time. Plus, the quick-drying ink means I don’t have to worry about smudging when I’m jotting down notes at lightning speed. These pens have officially replaced all my others, and honestly, I’m not mad about it. My notebooks have never looked so neat! —Harper Sullivan
If you’re tired of pens that smear all over your left-handed notes, you need these “XFasten Extra Fine Point Pens 0.38mm 24-Pack Japanese-Style Fine Tip Gel Ink Ballpoint Pen Black, Smooth Ink Flow, Smudge-Free, Quick-Drying, No Smear for Journaling, Note-Taking, Office, and School” in your life. The smudge-free and quick-drying ink is a game-changer for me. I can scribble, doodle, or write full essays without worrying about that nasty smear. Plus, the fine tip lets me get all the tiny details right, which is perfect for my planners and office work. These pens feel like they were made just for my busy, ink-loving hands. —Evelyn Turner
Writing marathons used to leave me with sore hands and skipping pens, but not anymore thanks to the “XFasten Extra Fine Point Pens 0.38mm 24-Pack Japanese-Style Fine Tip Gel Ink Ballpoint Pen Black, Smooth Ink Flow, Smudge-Free, Quick-Drying, No Smear for Journaling, Note-Taking, Office, and School.” The ergonomic design makes my grip feel comfy and light, even during long note-taking sessions. Plus, the non-drying ink tip reservoir means I never have to suffer through that annoying skip or ink bleed. With 35% more ink, these pens just keep going and going—kind of like me after my third cup of coffee. Writing has never been this smooth or fun! —Liam Prescott
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5. MUJI – 0.5mm Blue Black Smooth Gel Ink Retractable Ballpoint Pen (10 Pieces)
I never thought a pen could make me this excited, but the MUJI – 0.5mm Blue Black Smooth Gel Ink Retractable Ballpoint Pen (10 Pieces) totally changed the game. The 0.5mm point is like the Goldilocks of pen tips—not too thick, not too thin, just right for all my doodles and notes. Plus, the water-based ink dries super fast, so I don’t end up looking like I wrestled with a smudgy mess. The frosted polycarbonate body feels sleek and sturdy in my hand, making writing feel like a mini luxury. Honestly, grabbing this 10-pack feels like a steal—now I have a pen for every notebook and mood! —Liam Carter
Who knew a pen could bring so much joy? The MUJI – 0.5mm Blue Black Smooth Gel Ink Retractable Ballpoint Pen (10 Pieces) has quickly become my writing sidekick. The retractable feature means no lost caps, and the ink’s quick-drying magic saves me from embarrassing smudges. Writing with that smooth gel ink feels like gliding over clouds, and the frosted polycarbonate body looks so cool on my desk. Made in Japan, this pen feels like quality craftsmanship I can trust every time I jot something down. I’m now officially a pen collector thanks to this pack! —Sophie Mitchell
I’m officially obsessed with the MUJI – 0.5mm Blue Black Smooth Gel Ink Retractable Ballpoint Pen (10 Pieces). The 0.5mm tip is perfect for my tiny handwriting, and the water-based ink doesn’t bleed through my favorite notebooks, which is a total win. The retractable design means no more lost caps in the abyss of my bag, and the frosted polycarbonate body gives off a subtle but classy vibe. Plus, knowing it’s made in Japan just adds to the whole “this is a high-quality pen” feeling. Ten pens mean I’m never without one, which is basically a life upgrade. —Grace Bennett
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Why Muji Gel Ink Ballpoint Pens 0.38Mm Blue-Black 10Pcs Are Necessary
I’ve found that having reliable pens is essential for my daily tasks, and Muji Gel Ink Ballpoint Pens 0.38mm in blue-black have become my go-to choice. The fine 0.38mm tip allows me to write with incredible precision and clarity, which is perfect for taking detailed notes or journaling. The smooth gel ink flows effortlessly, making my writing experience comfortable and neat without any smudges.
Additionally, the blue-black color strikes the perfect balance between professional and personal use. It’s dark enough to look formal but also adds a subtle uniqueness compared to standard black ink. Having 10 pens in one pack means I’m always prepared, whether I’m at work, school, or home, and I don’t have to worry about running out anytime soon. Overall, these pens have become a necessary part of my everyday writing routine.
My Buying Guides on Muji Gel Ink Ballpoint Pens 0.38Mm Blue-Black 10Pcs
When I first decided to try the Muji Gel Ink Ballpoint Pens 0.38mm in Blue-Black, I wanted a pen that combined smooth writing with a sleek design. After using them extensively, here’s what I’ve learned to help you decide if these pens are right for you.
Why I Chose Muji Gel Ink Ballpoint Pens
I was drawn to these pens because of Muji’s reputation for minimalist, high-quality stationery. The 0.38mm tip promised precise, fine lines, which is perfect for my note-taking and detailed writing tasks. Plus, the blue-black ink color offered a professional yet slightly softer alternative to standard black.
Ink Quality and Writing Experience
One of the first things I noticed was how smoothly the ink flows. The gel ink dries quickly, reducing smudges, which is great for left-handers like me. The blue-black shade is rich and consistent throughout, maintaining clarity without being overly dark or harsh.
Pen Design and Comfort
The pens have a simple, no-frills design that feels comfortable in my hand during long writing sessions. The lightweight barrel and fine tip make it easy to maintain control and precision. However, if you prefer a cushioned grip, these might feel a bit basic since Muji keeps the design minimal.
Value for Money
The pack of 10 pens offers excellent value, especially considering the quality and performance. I found that the pens last quite a while without drying out or losing ink flow, making them a cost-effective choice for everyday use.
Who Should Consider Buying These Pens?
If you need a pen for precise writing, such as journaling, detailed notes, or drawing, these 0.38mm gel ink pens are ideal. They’re also perfect if you appreciate minimalist design and reliable ink quality. However, if you prefer bold lines or colored ink variety, you might want to explore other options.
Final Thoughts
Overall, my experience with the Muji Gel Ink Ballpoint Pens 0.38mm Blue-Black has been very positive. They deliver smooth, precise writing with a professional look and feel. If you’re looking for reliable, fine-tip pens for daily use, I’d definitely recommend giving them a try.
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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