Kokuyo Campus vs Midori MD: Which Japanese Notebook?

These are the two most recommended Japanese notebooks in the world — and they couldn’t be more different. The Kokuyo Campus is Japan’s everyday workhorse: affordable, practical, and found in literally every student’s bag in the country. The Midori MD is the quiet luxury option: a premium, minimalist notebook with paper so smooth it’s become legendary among fountain pen users and journalers.

We’ve been using both notebooks extensively for years. We take class-style notes in the Campus, journal in the Midori MD, and have tested both with every type of pen and pencil we could get our hands on. This comparison isn’t about declaring one better than the other — it’s about helping you understand which one is right for your specific needs.

Quick Answer: There’s no single winner because these notebooks serve different purposes. The Kokuyo Campus is the best value notebook in the world — buy it for school notes, work notes, and everyday writing where you need affordable quality. The Midori MD is a premium experience — buy it for journaling, creative writing, fountain pen use, and any notes you want to keep long-term. Most stationery enthusiasts end up owning both.

At a Glance

Feature	Kokuyo Campus B5	Midori MD A5
Price	~$3	~$12
Size	B5 (6.9 x 9.8 in / 17.6 x 25 cm)	A5 (5.8 x 8.3 in / 14.8 x 21 cm)
Pages	30 sheets (60 pages)	88 sheets (176 pages)
Paper Weight	~70 gsm	~80 gsm
Paper Color	White	Cream
Ruling Options	Dotted-ruled, ruled, grid, blank	Ruled, grid, blank
Binding	Staple-bound (saddle stitch)	Thread-bound (sewn)
Cover	Thin cardstock	Translucent paraffin paper
Lay Flat	Mostly (slight resistance at spine)	Yes (completely flat)
Pen Compatibility	Gel pens, ballpoints, pencil (good); fountain pen (adequate)	Excellent with all types, including fountain pen
Ink Dry Time	Fast	Slower (paper absorbs less)
Show-Through	Minimal	Very minimal
Bleed-Through	Rare	Very rare
Best For	Students, everyday notes, high volume	Journaling, fountain pen, creative writing, keepsakes
Rating	4.3/5	4.7/5

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Kokuyo Campus — In-Depth Review

The Standard-Bearer

The Kokuyo Campus notebook is to Japan what the Mead composition book is to America — except dramatically better. Walk into any convenience store, bookstore, or stationery shop in Japan and you’ll find Campus notebooks. They’re everywhere, and for good reason: they deliver a quality of paper and design that embarrasses Western notebooks costing twice as much.

Kokuyo has been manufacturing the Campus line since 1975 and has sold over 30 billion notebooks worldwide. That’s not a typo — 30 billion. The current generation represents decades of refinement in paper engineering, binding, and design.

Paper Quality

The Campus paper is a proprietary blend engineered specifically for the pens and pencils most commonly used in Japanese schools and offices. At approximately 70 gsm, it’s thinner than the Midori MD but surprisingly resistant to bleed-through. Gel pens write crisply on it without feathering. Mechanical pencil lines are clean and erase well. Even ballpoint pens, which often struggle on cheap paper, perform nicely on Campus paper.

With fountain pens, the Campus paper is adequate but not exceptional. Fine Japanese nibs (F and EF) work well, but wetter or broader nibs can cause some feathering and show-through. If fountain pens are your primary writing tool, the Midori MD is the better choice — but if you only occasionally use a fountain pen alongside gel pens and pencils, the Campus handles it fine.

The paper is bright white, which provides maximum contrast and readability. Some people prefer this clinical clarity; others find it a bit stark compared to cream-colored papers.

Ruling and Layout

Kokuyo’s Campus Dotted Ruled (todai-shiki) ruling is brilliant. Instead of solid printed lines, the page has small dots arranged at regular intervals along invisible rule lines. These dots are visible enough to guide your writing in straight lines but subtle enough that they don’t dominate the page. You can also use the dots as grid points for drawing tables, boxes, and diagrams.

Standard ruling options include 6mm dotted-ruled (A-ruled, most popular), 7mm ruled (B-ruled), 5mm grid, and blank. The 6mm A-ruled is our recommendation for most students.

Build and Binding

The Campus is staple-bound (saddle-stitched), which means metal staples hold the folded signatures together at the spine. This is the simplest and most cost-effective binding method, and it works perfectly for a notebook you’ll fill up in a few weeks and then shelve.

The thin cardstock cover comes in a variety of colors and designs. It protects the pages adequately but isn’t designed for hard use — if you’re rough on your notebooks, the cover will show wear. The notebook lies mostly flat when opened, with slight resistance at the center spine.

At 30 sheets (60 pages), the Campus is relatively thin. This is intentional — Japanese students typically use one notebook per subject, carrying several thin notebooks rather than one thick binder. It keeps each subject self-contained and your bag from getting too heavy.

Value

At ~$3 per notebook — or significantly less when bought in multi-packs — the Campus is an absurd value. The paper quality alone justifies a higher price. In Japan, Campus notebooks often cost the equivalent of ~$1.50–2, making them even more of a steal. We’ve never found a better notebook at this price from any brand, in any country.

Best Features

• Unbeatable price-to-quality ratio
• Dotted ruling is the best in the business
• Paper handles gel pens and pencils beautifully
• Lightweight and slim — easy to carry multiples
• Widely available in the US via Amazon and JetPens

Check Price on Amazon

Limitations

• Paper is adequate, not exceptional, with fountain pens
• Thin cover won’t withstand rough handling
• 30 sheets may not be enough for lengthy projects
• Staple binding doesn’t lay as flat as thread binding
• White paper lacks the warmth of cream alternatives

Check Price on Amazon

For our full review, see: Kokuyo Campus Notebook Review

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Midori MD — In-Depth Review

The Premium Experience

The Midori MD notebook is a different animal entirely. Made by Designphil (a Tokyo-based design company), the MD line is built around a single philosophy: the paper should be the star. Everything else — the cover, the binding, the branding — is deliberately minimalist so that nothing distracts from the writing experience.

“MD” stands for “Midori Diary,” and the paper was originally developed for Midori’s diary and planner line. When stationery enthusiasts discovered how beautiful this paper was for fountain pens and journaling, Designphil expanded the line into standalone notebooks. It’s been a cult favorite ever since.

Paper Quality

MD paper is where this notebook justifies its $12 price tag. At approximately 80 gsm, it’s slightly heavier than Campus paper and has a noticeably different texture — silky smooth with a very slight tooth that gives your pen just enough feedback without any scratchiness.

The cream color is warm and easy on the eyes. It provides a softer, more pleasing canvas than bright white paper, especially during long writing sessions. Cream paper also brings out ink colors beautifully — blues look deeper, blacks look richer, and colored inks pop with vivid warmth.

With fountain pens, the MD paper is superb. It handles wet, broad nibs with minimal feathering and virtually no bleed-through. Ink shading — the natural variation from light to dark within a stroke — is displayed gorgeously on MD paper. If you use fountain pen inks like Pilot Iroshizuku, this paper will show off their shading and sheen properties better than almost any other notebook paper.

Gel pens and ballpoints also perform excellently. The smooth surface allows for effortless writing, and ink colors look vibrant against the cream background. Pencil works well too, with clean lines that erase without fuss.

The one trade-off: because MD paper is smoother and less absorbent, ink takes slightly longer to dry. If you’re a fast writer using wet gel ink, you may notice occasional smudging. It’s a minor issue — a second or two of patience between lines solves it — but it’s worth mentioning.

Ruling and Layout

The Midori MD line offers ruled (7mm), grid (5mm), and blank options. The ruling is printed in a faint grey that’s visible enough to guide your writing but doesn’t dominate the page. It’s less clever than Kokuyo’s dotted ruling but perfectly functional.

We wish Midori offered a dot-grid option, which has become popular in the journaling community. For now, the grid and blank versions serve that audience, but a dot-grid MD notebook would be ideal.

Build and Binding

This is where the MD notebook pulls far ahead of the Campus. The thread-bound (sewn) binding is the highlight of the physical design. The spine is sewn in sections and then glued, creating a notebook that opens completely flat — truly flat, with zero resistance or spring-back. You can write seamlessly across the center gutter, which is a joy for sketchers and anyone who uses the full page width.

The binding is also far more durable than staple binding. An MD notebook can withstand being opened, closed, and carried around for months without pages loosening or the spine cracking.

The cover is a sheet of translucent paraffin wax paper — an unusual, distinctly Japanese design choice that looks and feels unlike any other notebook. It’s elegant, tactile, and provides adequate protection while adding almost no weight or bulk. Over time, the paraffin paper develops a subtle patina from handling, which many users find charming. Optional fabric and leather covers are available separately.

At 88 sheets (176 pages), the MD has nearly three times the page count of the Campus. This makes it well-suited for long-term projects, journals, and any use where you want a single, substantial volume rather than a series of thin notebooks.

Value

At ~$12, the MD is four times the price of a Campus notebook. Is it four times better? That depends on what you’re using it for. For everyday class notes, absolutely not — the Campus is the smarter buy. For journaling, creative writing, fountain pen use, or any notes you want to treasure long-term, the MD’s superior paper, binding, and build quality justify the premium.

When you calculate cost per page, the gap narrows: the Campus is about $0.05 per page, while the MD is about $0.07 per page. The MD’s 176 pages actually deliver quite good value for a premium notebook.

Best Features

• Exceptional MD paper — silky smooth, fountain-pen-friendly, beautiful shading
• Warm cream color that flatters ink colors
• Thread-bound binding lies completely flat
• 176 pages — substantial volume for long-term use
• Minimalist, elegant design
• Durable construction built to last

Limitations

• $12 price is a significant step up from budget notebooks
• Slower ink dry time due to paper smoothness
• No dotted-ruled option
• A5 only size (for the standard notebook; other sizes exist in the MD line)
• Paraffin cover is beautiful but not protective in a loaded backpack

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For our full review, see: Midori MD Notebook Review

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Head-to-Head Comparison

Paper Quality

Winner: Midori MD

The MD paper is objectively superior in almost every measurable way — smoother, more fountain-pen-friendly, better shading reproduction, and more resistant to bleed-through. The warm cream color is also more pleasant for extended reading and writing. The Campus paper is very good for its price, but it can’t match the MD’s performance, particularly with fountain pens and high-quality inks.

Ruling and Layout

Winner: Kokuyo Campus

Kokuyo’s dotted ruling is genuinely innovative and more useful than the MD’s standard ruled lines. The dots guide your writing while staying unobtrusive, and they double as alignment points for tables and boxes. Midori’s ruling is perfectly fine, but it doesn’t offer anything beyond what you’d find in any decent notebook.

Build Quality and Binding

Winner: Midori MD

Thread binding versus staple binding is no contest for quality. The MD lies perfectly flat, handles months of use without loosening, and looks beautiful on a shelf. The Campus is functional and gets the job done, but the staple binding is basic and the thin cover won’t age well. If you care about how a notebook feels in your hands and how it holds up over time, the MD wins decisively.

Portability

Winner: Kokuyo Campus

The Campus is thinner, lighter, and sized for easy carrying. Japanese students routinely carry four or five Campus notebooks for different subjects without their bags becoming uncomfortably heavy. The MD’s A5 size is compact, but at 176 pages, it’s noticeably thicker and heavier than a single Campus notebook. For daily commutes and packed bags, the Campus’s slim profile is a practical advantage.

Pen Compatibility

Winner: Midori MD

Both notebooks handle gel pens and pencils well, but the MD is dramatically better with fountain pens and high-quality inks. If you write exclusively with gel pens and mechanical pencils, the difference is modest. If you use fountain pens even occasionally, the MD is the clear choice.

Value

Winner: Kokuyo Campus

At ~$3, the Campus is the best-value notebook in the world. Full stop. You can buy four Campus notebooks for the price of one MD. For students on a budget, for high-volume note-takers, and for anyone who goes through notebooks quickly, the Campus’s value proposition is unbeatable.

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Choose Kokuyo Campus If…

• You’re a student taking daily class notes. The Campus is the standard for a reason — affordable, practical, and the paper handles everyday pens perfectly. Buy one per subject and don’t think twice.
• You’re on a budget. At $3 per notebook, you can fully stock a semester for what one or two premium notebooks would cost.
• You go through notebooks quickly. If you fill a notebook every few weeks, the Campus’s low price means you can write freely without worrying about “wasting” pages.
• You primarily use gel pens, ballpoints, or mechanical pencils. The Campus paper is optimized for these tools. You’ll get excellent performance without paying for fountain-pen-grade paper you don’t need.
• You prefer a larger writing surface. The B5 size gives you more room per page than the MD’s standard A5.
• You want Japan’s dotted ruling. Kokuyo’s dotted-ruled layout is the best ruling system we’ve used and it’s exclusive to Campus notebooks.

Choose Midori MD If…

• You use fountain pens. The MD paper is one of the best fountain pen papers in the world. Shading, sheen, and ink behavior are all vastly superior to the Campus on MD paper. If you’ve invested in quality fountain pen inks, you owe it to yourself to use paper that does them justice.
• You journal or do creative writing. When your writing is personal and meant to be kept, the MD’s premium paper, durable binding, and elegant design make the experience more meaningful. It’s a notebook that feels worth writing in.
• You want a notebook that lies flat. The thread binding opens completely flat with zero resistance — essential for sketching, writing across spreads, and comfortable writing in the center gutter.
• You want long-term durability. The MD is built to sit on a shelf for years. The binding won’t loosen, the paper won’t yellow, and the notebook will hold together through repeated handling.
• You appreciate tactile, minimalist design. The paraffin cover, the cream paper, the sewn spine — the MD is a beautifully made object. If the physical experience of your notebook matters to you, the MD delivers.
• You prefer warm, cream-colored paper. Some people simply prefer writing on cream versus bright white. If that’s you, the MD is one of the best cream-paper notebooks available.

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Can You Use Both?

Absolutely — and this is what we recommend for most stationery enthusiasts. The Campus and the MD are not competitors so much as complements. Use the Campus for everyday, high-volume notes where practicality and cost matter. Use the Midori MD for journaling, important projects, and writing you want to preserve.

Many Japanese stationery users follow exactly this pattern. The Campus handles the daily grind; the MD handles the special occasions. Together, they cover every notebook need you’ll ever have.

See Kokuyo Campus 5-Pack on Amazon | See Midori MD on Amazon

For more recommendations, check out our best Japanese notebooks roundup and our beginner’s guide to Japanese stationery.

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Frequently Asked Questions

Can I use a Kokuyo Campus notebook with a fountain pen?

Yes, but with caveats. The Campus paper handles fine fountain pen nibs (Japanese F and EF) reasonably well, with minimal feathering. Broader or wetter nibs may cause some feathering and increased show-through. For occasional fountain pen use alongside gel pens and pencils, the Campus is adequate. For dedicated fountain pen writing, the Midori MD is the better choice.

Does the Midori MD paper bleed through?

Very rarely. In our extensive testing, the 80 gsm MD paper resisted bleed-through from gel pens, ballpoints, fineliners, and most fountain pen inks. The only time we saw significant bleed-through was with extremely wet broad nibs using heavily saturated ink, and even then, it was minimal. For normal use, you can confidently write on both sides of every page.

Which notebook is better for bullet journaling?

The Midori MD, particularly in the grid or blank version. The superior paper quality, thread-bound flat-lay binding, and 176-page count make it well-suited for the varied mark-making that bullet journaling involves — fine-tip pens for rapid logging, colored pens for headers, and highlighters for coding. The Kokuyo Campus works too (especially in 5mm grid), but the MD’s paper handles the diverse ink types better.

Are there other sizes available?

Kokuyo Campus notebooks come in A5, B5 (most popular), and A4 sizes, plus various page counts. Midori MD notebooks are available in A5 (standard), A4, B6 Slim, and a pocket-sized version. Both brands also offer related products — Kokuyo has the Smart Ring binder system, and Midori offers MD Paper Pad (loose sheets) and MD Cotton paper for premium applications.

How many Kokuyo Campus notebooks equal one Midori MD?

In terms of page count: about three. A Campus has 60 pages; an MD has 176 pages. In terms of price: about four. A Campus costs $3; an MD costs $12. So you get more total pages for your money with the Campus, but the MD’s pages are higher quality.

Which is more environmentally friendly?

Both brands are Japanese and adhere to Japan’s generally high environmental manufacturing standards. The Campus’s thinner paper uses less material per notebook, but you need more notebooks to match the MD’s page count. The MD’s durability means it lasts longer and is less likely to be discarded prematurely. Neither notebook is made from recycled paper in their standard versions, though Kokuyo does offer a Campus recycled paper variant in Japan.

Where can I buy these notebooks in the US?

Both are widely available on Amazon, which is the easiest option for most US buyers. JetPens carries the full range of both Kokuyo Campus and Midori MD products with detailed descriptions and comparison photos. If you prefer shopping in person, Muji stores and Kinokuniya bookstores (in major US cities) stock both brands. Some Barnes & Noble locations also carry Midori MD notebooks. For readers outside the US, the Amazon links on our site automatically redirect to your local Amazon store (Amazon.co.uk, Amazon.ca, Amazon.com.au, and others), so you can order with local shipping and pricing.