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Quick answer
The Hobonichi Techo Cousin avec 2027 splits Hobonichi's A5 planner into two six-month books, lime yellow for January to June and ice blue for July to December. Each is 210 × 148 × 10 mm, about 260 g, with 288 pages: daily pages, vertical weekly pages and monthly calendars. It is a Japanese edition, made in Japan.
On this page10 sections
Both Cousin avec books and a weekly spread, drawn to scale (1 mm = 1 px).
Product facts
Product
Hobonichi Techo Cousin avec 2027, A5, two 6-month books (Japanese, January start, Monday start)
Tomoe River paper, thread-sewn binding; lime yellow and ice blue paper covers
Released
September 2026*
Price range
$$$$20–75 per notebook
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Notes on these facts
Made by Hobonichi Co., Ltd. (Tokyo). Made in Japan: Hunter Paper Co.'s listing for the 2027 Japanese A5 Cousin avec books says Made in Japan. Hobonichi's Japanese store page gives size, weight, pages and paper but no country of manufacture. Source. Price: example listing. Released: Hobonichi put its 2027 lineup on sale on September 1, 2026.
Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).
Key takeaways
Hobonichi lists each Cousin avec book at 210 × 148 × 10 mm (8.3 × 5.8 × 0.4 in) and about 260 g; the one-book Cousin is 18 mm and about 445 g.
Each book has 288 pages, including 54 vertical weekly pages; daily pages total 377, 187 in book 1 and 190 in book 2.
Hobonichi's Japanese store lists the pair at ¥5,170 (about US$33) with tax; US sellers put it near the top of our $$$ band ($20–75).
It is sold only as a Japanese edition with Monday-start weeks.
Hunter Paper Co. lists the 2027 Cousin avec books as made in Japan.
What is the Hobonichi Techo Cousin avec 2027?
The Cousin avec is Hobonichi’s A5 planner split into two half-year books, with daily, weekly and monthly pages in each. Book 1 runs January to June in a lime yellow cover; book 2 runs July to December in ice blue.
Hobonichi says the layout matches the one-book Hobonichi Cousin, apart from calendar ranges and the number of bonus pages. You get the A5 Cousin’s big daily page and its vertical weekly pages, at roughly half the weight per book.
Hobonichi Cousin avec 2027 specs
Spec
Each book
Size
A5, 210 × 148 × 10 mm (8.3 × 5.8 × 0.4 in)
Weight
About 260 g (9.2 oz)
Pages
288
Daily pages
Book 1: January 1–June 30 (187) · Book 2: July 1–December 31 (190)
Weekly pages
54 per book, vertical
Monthly calendars
Book 1: Dec 2026–Jul 2027 · Book 2: Jun 2027–Jan 2028 (16 pages each)
Memo pages
Book 1: 8 · Book 2: 4
Grid
3.7 mm
Paper, binding
Tomoe River, thread-sewn (opens flat)
Language, week start
Japanese, Monday
List price (Japan)
¥5,170 (about US$33) for the pair, with tax
Made in
Japan (per Hunter Paper Co.)
All figures are from Hobonichi’s Japanese store page, except the country.
The two books overlap at the handover, so June and July plans fit in either.
How heavy is the Cousin compared with the avec?
Each Cousin avec book weighs about 260 g, against about 445 g for the one-book 2027 Cousin, per Hobonichi. The one-book Cousin is 18 mm thick; each avec book is 10 mm.
The pair together weighs more than one Cousin, because each book repeats the yearly pages, monthly calendars and bonus pages. The gain is what you carry on any given day.
What do the weekly pages look like?
Each weekly spread lays the seven days out in vertical columns against a time axis, Monday first. Hunter Paper Co. notes that the weekly pages include a time schedule, which makes them good for appointments, while the daily pages hold notes, diaries and pasted tickets.
The weekly spreads run a few days past each half-year, so book 2 starts with the last week of June. The Original avec has no weekly pages at all; that is the main reason to choose the Cousin version.
Cousin avec or Original avec: which should you choose?
Choose the Cousin avec for room and weekly planning, and the Original avec for a pocketable A6 book.
Cousin avec 2027
Original avec 2027
Size per book
210 × 148 × 10 mm
148 × 105 × 8 mm
Weight per book
About 260 g
About 110 g
Pages per book
288
240
Weekly pages
Yes, vertical
No
Price (Japan, pair)
¥5,170 (about US$33)
¥3,080 (about US$19)
Both use the same Tomoe River paper and 3.7 mm grid. See our Hobonichi lineup guide for the Weeks, Day-Free and HON. For an A5 weekly-block planner built around Japan’s seasonal calendar, see the Koyomi Seikatsu Techo.
Which cover fits the Cousin avec?
Any Cousin (A5) Hobonichi cover fits each avec book. Hobonichi says avec books take the same covers as the regular editions, and at 10 mm instead of 18 mm each book leaves more room in the cover’s pockets.
Where is the Hobonichi Cousin avec made?
Hunter Paper Co. lists the 2027 Cousin avec books as made in Japan. Hobonichi’s store page doesn’t name the country of manufacture for the books. Hobonichi is based in Tokyo; for more on the paper, read our Tomoe River paper guide.
Frequently asked questions
How much does a Cousin avec book weigh?
About 260 g each, per Hobonichi's Japanese store. The one-book 2027 Cousin weighs about 445 g, so you carry a little over half the weight.
Does the Cousin avec have weekly pages?
Yes. Each book has 54 vertical weekly pages: book 1 from December 28, 2026 to July 4, 2027 and book 2 from June 28, 2027 to January 2, 2028.
Is there an English Cousin avec?
Not for 2027. Hobonichi sells the Cousin avec as a Japanese edition; the one-book Cousin comes in English.
Will my Cousin cover fit the avec books?
Yes. Hobonichi says avec books take the same covers as the regular editions, and each Cousin avec book is the same A5 size, only thinner.
What grid size is the Hobonichi Cousin?
3.7 mm, per Hobonichi's spec table for the Cousin avec, the same grid as the Original.
Why buy the Cousin avec instead of the Original avec?
For space and weekly planning: the Cousin avec pages are A5, twice the area of A6, and it adds vertical weekly pages that the Original avec lacks.
Is the Hobonichi Cousin avec made in the USA?
No, in Japan, per Hunter Paper Co.'s 2027 listing. Hobonichi doesn't name the country on its store page.
