This cover is produced by Arts&Science, a brand and shop led by Sonya Park, who is also the creative director of the Hobonichi Techo Planner.
The leather for this edition is fine and smooth buffalo leather. It is made by a “semi-chrome process,” combining the advantages of tannin for durability and chromium for flexibility.
The cover is deep burgundy, and the inner cover is a brighter, vivid red. This allows you to enjoy the two different nuances when the techo is closed and when it is open.
It is a trifold type with a magnet and a tab as an accent to the design, making it easy to open the techo.
Inside the cover is a pocket where you can tuck in items you want to carry with your techo. The front is stamped with the logos of Arts&Science and Hobonichi.
It also includes a hook that can hold a pen by its clip.
The bookmark is kept simple and uses the same leather as the cover.
The longer you use it, the more beautiful the luster becomes. We hope you enjoy the change over time.
*How the leather ages will differ based on usage, time, and its environment.
*We also have the Planner, the full-English version of the book, directed by Sonya Park. It features an ingenious design, including bonus pages exclusive to the book.
*This cover is also available as an Arts&Science exclusive kip leather (cowhide) with a paint finish.
The Hobonichi Techo leather covers are made with all-natural materials that have their own unique appearance. Every leather cover is a one-of-a-kind, all-natural product, so you can feel good knowing your cover is the only one like it in the world. Here are some of the unique characteristics you can expect to find.
- Markings that naturally occur during an animal’s life:
Wrinkles, veins, texture, and scratches
- Characteristics from the manufacturing process of natural leather:
Dark spots (occurs when components of the leather are exposed to iron in the air during the tanning and dyeing process)
Arts&Science is a store and brand headed by creative director Sonya Park. Launched in 2003, they now have stores in Tokyo, Kamakura, Kyoto, and Fukuoka under various concepts.
The stores feature a wide variety of items such as original clothing, home goods designed to make your time at home more fulfilling, everyday items, artist collections, and even in the field of food. The stores also occasionally host exhibitions and projects.
Arts&Science Website
Introduction to Baby Buffalo
(Hobonichi Techo 2025 lineup)
*1 Also compatible with the One Piece Edition Original Book.
Size | H: 161 x W: 323 x T: 3 mm / H: 6.3" x W: 12.7" x T: 0.1" *Specifications may vary slightly |
---|---|
Weight | Approx. 96 g |
Main material | Exterior: Cow leather / Interior: Cow leather |
Size | A6 size H: 148 x W: 105 x T: 15 mm / H: 5.8"" x W: 4.1"" x T: 0.6"" *Actual book size may vary slightly |
---|---|
Weight | Approx. 195 g |
Language | English |
Pages | 464 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 3.7 mm *Monthly calendar pages are 3.45 mm |
Start of Week | Monday-start week or Sunday-start week |
Yearly Calendar | 2024, 2025, 2026 |
Yearly Index | Dec. 2024 - Mar. 2026 (8 pages) |
Monthly Calendar | Dec. 2024 - Mar. 2026 (32 pages) |
Daily Pages | Jan. 1 - Dec. 31, 2025 (377 pages) *A blank two-page spread is featured at the beginning to provide a free area when starting out the book. *A page is included at the beginning of each month to help in planning ahead. *All daily pages include daily quotes. *Includes a mini monthly calendar at the bottom right of every two-page spread (Monday- / Sunday-start). |
Daily Quotes | One quote per two-page spread (English) |
Weekly Pages | Not included |
Memo Pages | 17 pages |
Bonus Pages | Time Table / Graph Paper / Favorites / My 100 / Sample Symbols and Icons / How to Have Fun Keeping a Diary / Oodles of Noodles / Words to Remember / 365 Days Check-Off Sheet / Looking Back at the Year 2025 / Getting the Most Out of Your Hobonichi Techo / Gifts / Addresses / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars / Moon phase (daily pages include every phase, monthly calendars only include full and new moon) |
Other | See the Exploring Each Type page for more details |
Size | A6 size H: 148 x W: 105 x T: 15 mm / H: 5.8"" x W: 4.1"" x T: 0.6"" *Actual book size may vary slightly |
---|---|
Weight | Approx. 190 g |
Language | English |
Pages | 448 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 4 mm |
Start of Week | Monday-start week |
Yearly Calendar | 2025, 2026 |
Yearly Index | Dec. 2024 - Mar. 2026 (8 pages) |
Monthly Calendar | Dec. 2024 - Mar. 2026 (32 pages) |
Daily Pages | Jan. 1 - Dec. 31, 2025 (377 pages) *A blank two-page spread is featured at the beginning to provide a free area when starting out the book. *A page is included at the beginning of each month to help in planning ahead. *Every two-page daily page spread includes one daily quote. *Includes a mini monthly calendar at the bottom right of every two-page spread (Monday-start). |
Daily Quotes | One quote per two-page spread (English) |
Weekly Pages | Not included |
Memo Pages | 16 pages |
Bonus Pages | Important Contacts / International Size Charts / The Ultimate Packing List / My 100 / How to Have Fun Keeping a Diary / Oodles of Noodles / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars and daily pages) / Moon phase (daily pages include every phase, monthly calendars only include full and new moon) |
Other | See the Exploring Each Type page for more details |
Size | A6 size H: 148 x W: 105 x T: 15 mm / H: 5.8" x W: 4.1" x T: 0.6" *Actual book size may vary slightly |
---|---|
Weight | Approx. 195 g |
Language | Japanese |
Pages | 464 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 3.7 mm *Monthly calendar pages are 3.45 mm |
Start of Week | Monday-start week or Sunday-start week |
Yearly Calendar | 2024, 2025, 2026 |
Yearly Index | Dec. 2024 - Mar. 2026 (8 pages) |
Monthly Calendar | Dec. 2024 - Mar. 2026 (32 pages) |
Daily Pages | Jan. 1 - Dec. 31, 2025 (377 pages) *A blank two-page spread is featured at the beginning to provide a free area when starting out the book. *A page is included at the beginning of each month to help in planning ahead. *All daily pages include daily quotes. *Includes a mini monthly calendar at the bottom right of every two-page spread (Monday- / Sunday-start). |
Daily Quotes | One per day (Japanese) |
Weekly Pages | Not included |
Memo Pages | 15 pages |
Bonus Pages | Time Table / Graph Paper / Favorites / My 100 / Sample Symbols and Icons / How to Have Fun Keeping a Diary / Recommended Noodle List of 47 Prefectures / Solar Terms / Emergency Preparedness / Conversion Chart / Getting the most of Hobonichi / Gifts / Age Table / Addresses (for 6 people) / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars) / Old lunar calendar / Rokuyo (traditional Japanese lunisolar calendar) (listed on monthly calendars) / Solar terms / Japanese holidays / Moon phase (daily pages include every phase, monthly calendars only include full and new moon) |
Other | See the Exploring Each Type page for more details |
Size | A6 size x 2 books Each Book: H: 148 x W: 105 x T: 8 mm / H: 5.9"" x W: 4.1"" x T: 0.3"" *Actual book size may vary slightly |
---|---|
Weight | Each Book: Approx. 110 g |
Language | Japanese |
Pages | Each Book: 240 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 3.7 mm *Monthly calendar pages are 3.45 mm |
Start of Week | Monday-start week |
Yearly Calendar | 2024, 2025, 2026 |
Yearly Index | Book 1: Dec. 2024 - Mar. 2026 (8 pages) Book 2: Jun. 2025 - May 2026 (6 pages) |
Monthly Calendar | Book 1: Dec. 2024 - Jul. 2025 (16 pages) Book 2: Jun. 2025 - Jan. 2026 (16 pages) |
Daily Pages | Book 1: Jan. 1 - June 30, 2025 (187 pages) Book 2: July 1 - Dec. 31, 2025 (190 pages) *A blank two-page spread (three pages for Book 2) is featured at the beginning to provide a free area when starting out the book. *A page is included at the beginning of each month to help in planning ahead. *All daily pages include daily quotes. *Includes a mini monthly calendar at the bottom right of every two-page spread (Monday-start). |
Daily Quotes | One per day (Japanese) |
Weekly Pages | Not included |
Memo Pages | Book 1: 2 page Book 2: 0 page |
Bonus Pages | Time Table / Graph Paper / Favorites / My 100 / Sample Symbols and Icons / How to Have Fun Keeping a Diary / Recommended Noodle List of 47 Prefectures / Solar Terms / Emergency Preparedness / Conversion Chart / Getting the most of Hobonichi / Gifts / Age Table / Addresses (for 6 people) / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars) / Old lunar calendar / Rokuyo (traditional Japanese lunisolar calendar) (listed on monthly calendars) / Solar terms / Japanese holidays / Moon phase (daily pages include every phase, monthly calendars only include full and new moon) |
Other | See the Exploring Each Type page for more details |
Size | A6 size H: 148 x W: 105 x T: 15 mm / H: 5.9"" x W: 4.1"" x T: 0.6"" *Actual book size may vary slightly |
---|---|
Weight | Approx. 195 g |
Language | Japanese |
Pages | 464 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 3.7 mm *Monthly calendar pages are 3.45 mm |
Start of Week | Monday-start week |
Yearly Calendar | 2024, 2025, 2026 |
Yearly Index | Dec. 2024 - Mar. 2026 (8 pages) |
Monthly Calendar | Dec. 2024 - Mar. 2026 (32 pages) |
Daily Pages | Jan. 1 - Dec. 31, 2025 (377 pages) *A blank two-page spread is featured at the beginning to provide a free area when starting out the book. *A page is included at the beginning of each month to help in planning ahead. *All daily pages include daily quotes. *All daily pages include character names of those who celebrate their birthday that day (as of Vol.107) |
Daily Quotes | One per day (Japanese / One Piece edition) |
Weekly Pages | Not included |
Memo Pages | 14 pages |
Bonus Pages | One Piece Chronology / Phrases from One Piece to use when it counts / Ten great scenes chosen by readers to read over and over again / WANTED / Timetable / Favorites / My 100 / Solar Terms / Emergency Preparedness / Gifts / Age Table / Addresses (for 6 people) / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars) / Old lunar calendar / Rokuyo (traditional Japanese lunisolar calendar) (listed on monthly calendars) / Solar terms / Japanese holidays / Moon phase (daily pages include every phase, monthly calendars only include full and new moon) |
Size | A6 size H: 148 x W: 105 x T: 8 mm / W: 4.1"" x H: 5.9"" x T: 0.3"" *Actual book size may vary slightly |
---|---|
Weight | Approx. 110 g |
Language | Japanese |
Pages | 240 pages |
Paper Type / Binding | Thin, light Tomoe River paper resistant to bleeding and designed for planners / Stitch-binding |
Graph Paper Size | 3.7 mm *Monthly calendar pages are 3.45 mm |
Start of Week | Monday-start week |
Yearly Calendar | 2024, 2025, 2026 |
Yearly Index | Dec. 2024 - Mar. 2026 (8 pages) |
Monthly Calendar | Dec. 2024 - Mar. 2026 (32 pages) |
Daily Quotes | Included (Japanese) |
Graph Paper | 171 pages |
Bonus Pages | Time Table / Graph Paper / Favorites / My 100 / Sample Symbols and Icons / How to Have Fun Keeping a Diary / Recommended Noodle List of 47 Prefectures / Solar Terms / Emergency Preparedness / Conversion Chart / Getting the most of Hobonichi / Gifts / Age Table / Addresses (for 6 people) / Personal Notes |
Listed Information | Day of the year / Week of the year (listed on monthly calendars) / Old lunar calendar / Rokuyo (traditional Japanese lunisolar calendar) (listed on monthly calendars) / Solar terms / Japanese holidays / Moon phase (Full and new moon listed on monthly calendars) |
Other | See the Exploring Each Type page for more details |
In order to provide you with the most satisfaction for your product, we've compiled a list of warnings, potential issues, and tips to keep in mind for this particular product. Please be sure to read this information carefully before placing your order.
Each item is individually assembled and sewn by hand by a factory worker. Best efforts are made to ensure consistent sizes and specifications, but there may be slight differences.
This product uses delicate leather that accentuates the natural qualities of the material There may be unavoidable marks in the leather that occurred during the manufacturing process. There also may be original imperfections visible on the surface of the leather, such as wrinkles, scratches, stains, or vein marks. We ask for your understanding for these naturally-occurring characteristics of genuine leather, and hope you enjoy the material as these imperfections come to stand out less over time.
Dyed leather products tend to leave stains. Please be careful not to allow the leather to adhere or rub against other objects such as clothing or other belongings, especially if the bag is wet from water or sweat from your hands.
Please avoid storing your product in hot, humid places or placing it atop other objects for long periods of time as this may result in lower quality and color stains.
If you feel the metal fittings are in the way, we recommend writing over a pencil board.
The pen body has been processed to have a matte finish. After prolonged use or strong rubbing with a cloth, the matte finish may fade and become glossy. The matte finish may also come off if it comes in contact with certain chemicals, such as alcohol.
Immediately dab your product with a dry cloth if it gets wet. Avoid drying it with high temperatures, and place it in a well-ventilated place in the shade.
If you’ve used any of these products, we welcome your notes on what you like about them or what led you to buy them so we can share it with customers who are currently considering these products. We’d also love to welcome comments from customers who purchased their techo outside the Hobonichi Store or received their book as a gift.