This product is available for shipment within Japan only.
International shipping is not available.



This is a collaboration techo with Detective Conan, the popular mystery manga serialized in Weekly Shonen Sunday.



Based on the weekly horizontal Weeks design, this special edition features over 300 original illustrations. With this techo, you can enjoy the art, words, and tricks, spending every day alongside Conan and his friends.









“Memorial Conan” is a Weeks book featuring a luxurious full-color illustration of characters from Detective Conan, with Conan at the center. The group illustration, drawn to commemorate the release of the 100th volume of the comics, is printed on a canvas-like material. It is a rare illustration showing the characters wearing jackets and bow ties matching Conan’s.



The cover has been constructed as a light hardcover book with some give to it so it still bends.

*This product is not available in an English edition.









The spine features the English translation of Conan’s famous line, “There is always only one truth!” The silver foil stamping shines brightly when placed on a bookshelf.









The back cover features a foil-stamped logo created to commemorate the collaboration between Detective Conan and the Hobonichi Techo. The red foil stands out beautifully against the white background.









Not just the cover, but the inside is also a special specification packed with over 300 original illustrations from Detective Conan. For the front endpaper, we selected a title page illustration of Conan leaning against the sign of Café Poirot. The two bookmarks come in blue and red, inspired by the jacket and bow tie Conan wears.









The Detective Conan series Weeks also comes with a pencil board featuring the “Stun-Gun Wristwatch” motif. It is a collaboration-exclusive design with a clear window that lets you see through to the other side, resembling the lid of the watch.



It has markings at 1mm intervals along the long edge, so it can also be used as a ruler. The corner includes a “Today” tab, which will act as a bookmark to show which day you’re on if you put it between the pages of your techo.









The front of the pencil board reads “Pipipi...” and the back reads “Pashu.” You can aim at the target in front of you just like Conan.









While retaining the easy-to-use design of the Hobonichi Techo Weeks, the main weekly pages feature original illustrations from Detective Conan on every page. Illustrations related to the seasons and events will appear in your daily life. In addition, the Daily Quotes include not only the standard Weeks quotes but also words from Detective Conan characters and quotes selected by Gosho Aoyama!









The monthly calendar, covering March 2026 to April 2027, spotlights a different character each month. From Edogawa Conan in March to Ran Mōri in April, the appearing characters change every month, featuring various expressions selected from 107 volumes of comics.









The back of the book is filled with bonus pages based on Detective Conan illustrations and episodes that you can enjoy all year round!
In addition to adding character-themed touches to the standard pages found in the regular Weeks and the 62 pages of graph memo pages, this techo also includes seven special features exclusive to this edition.









The back endpaper features Conan staring out the window of the Mōri Detective Agency. It also comes with a clear, adhesive corner pocket you can stick anywhere you like.









The Detective Conan lineup includes not only the techo but also stationery and accessories suitable for various scenes.

The book uses thin and light yet durable Tomoe River paper. It's characterized by its ability to hold ink well and provide a smooth writing experience.









If you’d like storage space or a way to change up the look of your Weeks book, you can customize your book by pairing it with a Weeks cover.



See Weeks cover lineup







Open the cover, and you’ll find a special edition with Detective Conan characters appearing on almost every page. A techo that keeps the excitement going week after week—filled with cases, romance, and memories alike. Team up with a famous detective who never needs a labyrinth, and spend a year unraveling the mystery of the “Life Book!”



© Gosho Aoyama/Shogakukan