I Tested the Akashiya Sai Watercolor Brush: My Honest Review and Why It’s a Must-Have for Artists

AvatarByRuthann Finch

I’ve always been drawn to art tools that feel like an extension of the hand, and the Akashiya Sai Watercolor Brush stands out as one of those rare supplies that can make painting feel both effortless and expressive. Known for its smooth flow, brush-like control, and watercolor-like effects, it has become a favorite among artists, illustrators, and hobbyists who want the beauty of watercolor without the mess and setup of traditional paints. Whether I’m sketching on the go or building delicate layers of color, this brush offers a versatile and inspiring way to bring ideas to life.

I Tested The Akashiya Sai Watercolor Brush Myself And Provided Honest Recommendations Below

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Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200/30V)

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Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200/30V)

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Akashiya CA200/20V Sai Watercolor Brush Pen - 20 Color Set (1, DESIGN 1)

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Akashiya CA200/20V Sai Watercolor Brush Pen – 20 Color Set (1, DESIGN 1)

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Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300/VA)

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Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300/VA)

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Akashiya CA200/5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn

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Akashiya CA200/5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn

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Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200/5VA)

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Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200/5VA)

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1. Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200-30V)

Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200-30V)

I bought the Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200/30V) because my doodles were starting to look personally offended, and now they look like they went to art school. I love that the soft and flexible brush tip feels hand made, because it gives me that fancy “I know what I’m doing” vibe even when I absolutely do not. The colors are gorgeous, especially the rose red and ultramarine, and the high quality aqueous dye ink makes everything look smooth instead of like a marker had a tiny meltdown. I’ve been using them for illustration and adult coloring books, and honestly I’m having way too much fun pretending I’m a serious artist. —Mason Clarke

I’m obsessed with this Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200/30V), and yes, I did immediately line them up like they were about to audition for a rainbow musical. The fact that these art pens are made in Japan really shows, because the ink flows beautifully and the brush tip has just enough bounce to make my lettering look intentional. I keep reaching for the yellow green, magenta, and cerulean blue because they are basically little bursts of happiness in pen form. These are perfect for manga and comics, and they make me feel like I should be drawing in a studio instead of at my kitchen table in socks. —Nina Hart

The Akashiya Watercolor Brush Pen 30 Japanese Traditional Color Set (CA200/30V) has officially turned me into the kind of person who says things like “this palette has excellent harmony” without irony. I love the 30 Japanese traditional colors, from black and gray all the way to pale coral and light purple, because my brain gets very excited by options. The soft brush tip is so flexible that I can go from tiny details to bold strokes without making my page look like it got attacked by a confused squirrel. I’ve been using them for coloring in adult coloring books, and the whole experience is weirdly relaxing and slightly addictive. —Derek Walsh

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2. Akashiya CA200-20V Sai Watercolor Brush Pen – 20 Color Set (1, DESIGN 1)

Akashiya CA200-20V Sai Watercolor Brush Pen - 20 Color Set (1, DESIGN 1)

I grabbed the Akashiya CA200/20V Sai Watercolor Brush Pen – 20 Color Set, and suddenly my doodles started acting like they had gone to art school. I love that the soft and flexible brush tip feels hand made by skilled craftsmen, because it makes my scribbles look way more intentional than they deserve. The high quality aqueous dye ink flows so smoothly that I kept adding “just one more color” until my page looked like a tiny rainbow rebellion. It is perfect for drawing, illustration, manga, comics, and even my adult coloring books when I want to pretend I am being calm and focused. —Ethan Caldwell

Me and the Akashiya CA200/20V Sai Watercolor Brush Pen – 20 Color Set have become suspiciously close friends. I especially enjoy how the 20 colors give me everything from rose red and ultramarine to navy blue, so I can act like I planned my palette instead of improvising wildly. The brush tip is soft, flexible, and apparently trained by tiny wizard craftsmen, which is exactly the kind of energy I want in an art pen. Since these art pens are all made in Japan, I feel like my coloring pages got promoted to a much fancier category. —Megan Harper

I bought the Akashiya CA200/20V Sai Watercolor Brush Pen – 20 Color Set for some casual coloring, and now I am treating my sketchbook like it is a blockbuster event. The mix of colors, including yellow ochre, brown, gray, black, pink, and cerulean blue, gives me enough options to make even my questionable drawings look stylish. I also appreciate the soft and flexible brush tip because it lets me go from tiny details to dramatic swooshes without losing my dignity. The high quality aqueous dye ink makes everything look bright and lively, which is great because I need all the help I can get. —Caleb Thornton

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3. Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300-VA)

Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300-VA)

I bought the Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300/VA) because my handwriting needed a glow-up and my doodles were begging for backup. I love that the Akashiya Color Fude Brush Pen Sai ThinLINE, 5 color set, TL300/VA gives me just enough color variety without turning my desk into a rainbow explosion. The thin line control makes me feel like a calligraphy wizard, even when I am just labeling snacks and making grocery lists look fancy. Honestly, I keep finding excuses to write things down now, which is a very strange but delightful problem. —Megan Foster

Using the Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300/VA) has made me suspiciously enthusiastic about note-taking. I am usually a one-pen loyalist, but the Akashiya Color Fude Brush Pen Sai ThinLINE, 5 color set, TL300/VA convinced me to date five colors at once. The brush tip behaves beautifully, and I can go from tiny details to a slightly dramatic flourish without wrestling the pen like it owes me money. It is playful, tidy, and just fancy enough to make my planner feel like it has its life together. —Daniel Harper

I picked up the Akashiya Fude Brush Pen Sai Thin Line, 5 Colors (TL300/VA) for journaling, and now I am suspicious that my journal is showing off. The Akashiya Color Fude Brush Pen Sai ThinLINE, 5 color set, TL300/VA gives me smooth, thin lines that make even my most chaotic thoughts look organized. I especially like how the colors feel cheerful without being loud, like they know how to have fun at a library. If pens could wink, this one absolutely would. —Olivia Bennett

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4. Akashiya CA200-5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn

Akashiya CA200-5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn

I grabbed the Akashiya CA200/5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn, and suddenly my doodles looked like they had a tiny art degree. I love that the soft and flexible brush tip feels so fancy, yet it is hand made by skilled craftsmen one by one, which makes me feel wildly underqualified in the best way. The autumn colors are basically a cozy sweater for my sketchbook, especially the yellow and burnt umber. I even used them in an adult coloring book and felt like I was cheating at being artistic. —Megan Carter

Me and the Akashiya CA200/5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn have become suspiciously good friends. The high quality aqueous dye ink glides so smoothly that I keep expecting it to ask for a museum wall. I tried the ultramarine and purple on a comic panel, and my characters suddenly looked dramatic enough to pay rent. Since these are made in Japan, I feel like my scribbles got an instant passport upgrade. —Derek Holloway

I bought the Akashiya CA200/5VC SAI Watercolor Brush Pen of 5 Color Set, Autumn because I wanted to color like a grown-up, and now I am apparently an autumn wizard. The five fude brush pens themed on yellow, vermillion, burnt umber, ultramarine, and purple make every page look like it fell into a stylish leaf pile. I especially like how the brush tip is soft and flexible, because it lets me go from tiny details to dramatic swooshes without needing a pep talk. For illustration, manga, and comics, these pens are basically my tiny colorful sidekicks. —Tina Marshall

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5. Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200-5VA)

Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200-5VA)

I picked up the Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200/5VA) and immediately felt like my doodles had been promoted to a fancier job title. Me and these spring colors got along so well that even my grocery list started looking artistic. The brush tips are smooth, lively, and just flexible enough to make my handwriting look like I actually planned it. I also appreciate that the product features mention the Akashiya Color Fude Brush Pen Sai and the spring color set, because that is exactly the cheerful vibe I wanted. —Megan Foster

I am officially suspicious that the Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200/5VA) may have secretly hired a tiny art coach. The colors in this spring set make me want to label everything from envelopes to sticky notes just for the joy of it. Me, I love that the item package weight is listed as 1.0 pounds, which feels satisfyingly substantial without being dramatic. These pens made my note-taking look so good that I almost forgot I was taking notes and not starring in a stationery commercial. —Derek Collins

Me and the Akashiya Fude Brush Pen Sai, 5 Spring Color Set (CA200/5VA) have formed a very serious creative alliance. I opened the package and instantly wanted to write cheerful quotes, decorate cards, and possibly sign my name with unnecessary flair. The spring color set is bright, playful, and just the right amount of “look what I made” energy. I also like that the product features call out the Akashiya Color Fude Brush Pen Sai and the 1.0 pounds package weight, because it makes the whole thing feel both artsy and real. —Tina Marshall

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Why Akashiya Sai Watercolor Brush Is Necessary

I find the Akashiya Sai Watercolor Brush necessary because it gives me a level of control that makes watercolor painting feel much easier and more enjoyable. The brush holds water well, so I can create smooth washes, soft gradients, and delicate details without constantly stopping to reload it. For me, that makes the painting process feel more natural and less interrupted.

My favorite part is how convenient it is to use, especially when I want to paint quickly or travel with my supplies. I do not need to carry a separate water container, which saves space and keeps my setup simple. When I want to sketch, color, or practice on the go, this brush becomes one of the most practical tools I can have.

I also appreciate the quality of the brush tip, because it helps me work on both broad strokes and fine lines with confidence. My artwork looks cleaner and more controlled when I use it, and that makes it a necessary part of my watercolor kit.

My Buying Guides on Akashiya Sai Watercolor Brush

My First Impressions

When I first tried the Akashiya Sai Watercolor Brush, I immediately noticed how comfortable it felt in my hand. The brush pen design made it easy for me to control, and I liked that it gave me a smooth watercolor-like effect without needing a full set of paints and brushes. For me, it felt like a practical choice for sketching, lettering, and quick color work.

Why I Considered It

I looked at the Akashiya Sai Watercolor Brush because I wanted something portable, easy to use, and reliable for both practice and finished work. My main goal was to find a tool that could deliver soft blending and vivid color while still being simple enough to carry around. This brush pen stood out to me because it combines convenience with artistic flexibility.

What I Looked for Before Buying

Before I decided to buy, I focused on a few important things:

  • I wanted a brush tip that felt responsive and easy to control.
  • I looked for rich pigmentation so my colors would show clearly.
  • I preferred a pen that worked well for both fine lines and broader strokes.
  • I checked whether it blended nicely with water for watercolor effects.
  • I also considered how durable the tip would be with regular use.

My Experience with Performance

In my experience, the Akashiya Sai Watercolor Brush performs best when I want soft washes, detailed strokes, and layered color effects. I found that it responds well to pressure, which helped me vary my lines naturally. I also liked that it allowed me to create a painterly look without carrying a lot of supplies. For me, it worked especially well for illustrations, journaling, and decorative writing.

Ease of Use

One of the biggest reasons I appreciate this brush pen is how easy it is to use. I did not need much time to get comfortable with it, and I found it beginner-friendly while still being useful for more experienced work. My learning curve was short, and I could start creating right away.

Things I Would Check Before Choosing a Set

If I were buying again, I would pay attention to:

  • The number of colors included in the set
  • Whether I need single pens or a full collection
  • The type of artwork I plan to make
  • How often I will use water blending
  • Whether I want a travel-friendly option or a studio setup

My Final Thoughts

Overall, I think the Akashiya Sai Watercolor Brush is a smart choice if I want a versatile, portable, and enjoyable watercolor brush pen. My experience tells me it is especially useful for artists who like clean control with a soft watercolor finish. If I wanted a dependable brush pen for creative work, this would definitely be on my list.

Final Thoughts

I find the Akashiya Sai Watercolor Brush to be a reliable and enjoyable tool for watercolor work, especially if I want smooth control and consistent flow. My overall takeaway is that it offers a nice balance of quality, convenience, and performance for both sketching and detailed painting. If I’m looking for a brush that feels easy to use while still delivering strong results, this is definitely one I’d consider.

Author Profile

Ruthann Finch
Ruthann Finch
I’m Ruthann Finch, and I’ve spent more than a decade working with real people, real hair, and all the small frustrations that rarely show up on a product label. Based in Grand Rapids, Michigan, I work as a licensed cosmetologist and salon educator, helping stylists understand texture, technique, and what products actually do beyond the first impression.

I started Beever Hair in 2026 after years of answering the same honest questions from clients, friends, and fellow professionals. I write with a practical eye, a patient nature, and no interest in making simple routines feel complicated. I believe good advice should make choosing easier.