Local Bookstore x Post Office Collaboration: 'Postbox-style Book Cover' Appears! A New Reading Experience of 'Gifting a Book with a Letter' on Sant Jordi's Day
Seiwado Bookstore in Osaka and Osaka Joto Post Office are collaborating to launch a 'postbox-style book cover' and 'letter-style bookmark' from April 18, 2026, in anticipation of Sant Jordi's Day on April 23. This initiative proposes a new reading experience of 'gifting a book with a letter,' building on a successful collaboration from last year. Customers purchasing paperback books will receive the book cover and bookmark as a gift, with an original version also planned for online sale. The post office character 'Posukuma' will also appear during the event.
📋 Article Processing Timeline
- 📰 Published: April 14, 2026 at 19:00
- 🔍 Collected: April 14, 2026 at 10:31
- 🤖 AI Analyzed: April 16, 2026 at 03:43 (41h 11m after Collected)
■ Event Overview:
Seiwado Bookstore / seiwado.book.store. (Location: Tsurumi Ward, Osaka), a local bookstore founded in Osaka's Tsurumi in 1970, has gained popularity for its original book covers designed to attract visitors, now offering over 100 designs. It has also conducted numerous collaboration projects with companies and brands.
From April 18, 2026 (Saturday), as a special project in collaboration with Osaka Joto Post Office, we will be offering a "postbox-style book cover" and a "letter-style bookmark."
This project was planned with the theme of "gifting a book with a letter to convey feelings to loved ones" for "Sant Jordi's Day" (April 23), known as a day to give books and flowers to close friends. It can be used as a gift for loved ones, as well as for oneself.
Book cover created in collaboration with Osaka Joto Post Office (2026 edition)
■ How this initiative came about:
Since it was very well received last year, we decided to implement this collaboration project with Osaka Joto Post Office again this year.
"Sant Jordi's Day" is a commemorative day in Catalonia, Spain, with a culture of exchanging books and flowers. With the desire for people in Japan to also enjoy this wonderful custom related to books, a collaboration with a community-based post office was realized. By combining books and letters, which have a high affinity, we propose a new reading experience of "conveying feelings."
Book cover distributed in collaboration with the post office in 2025. The post office character "Posukuma" also visited the event in 2025, enlivening the venue.
Rose bookmark and POP created to commemorate Sant Jordi's Day to decorate the sales floor. Visitors enjoying the postbox-style book cover.
■ Features of the book cover & bookmark:
Original design paperback book cover with a postbox motif. Letter-inspired bookmark (with space to write a message). By adding a message to the book, it enhances its value as a gift and becomes a special item that can convey feelings to loved ones. The collaboration between a local post office and a local bookstore proposes a new gift style that leverages the charm of postal culture.
Front of the letter-inspired bookmark. Back of the letter-inspired bookmark (with space to write a message).
■ Distribution/Sales Information
● Distribution Start:
April 18, 2026 (Saturday) ~ *Ends when supplies run out.
● Planned Distribution Quantity: 1,000 sets (paperback book cover & bookmark)
● Distribution Method: Presented to customers who purchase paperback books. *An original Seiwado Bookstore version will be sold on the online store.
■ Special Event Held. A special event will be held for two days only on April 18 (Saturday) and 19 (Sunday), 2026.
① Post Office Character "Posukuma" will be here! Appearance times:
・10:00~11:00
・13:00~14:00
・15:00~16:00
② Post Office Original Goods Sale Date:
・10:00~16:00
■Seiwado Bookstore:
Seiwado Bookstore's original book covers with over 100 designs. Interior of Seiwado Bookstore, a local bookstore founded in Tsurumi, Osaka in 1970.
Book cover menu displayed in the store. The content changes seasonally. Many visitors from all over Japan and overseas visit, beyond their living area.
Seiwado Bookstore / seiwado.book.store. (Location: Tsurumi Ward, Osaka), a local bookstore founded in Osaka's Tsurumi in 1970, has gained popularity for its original book covers designed to attract visitors, now offering over 100 designs. It has also conducted numerous collaboration projects with companies and brands.
From April 18, 2026 (Saturday), as a special project in collaboration with Osaka Joto Post Office, we will be offering a "postbox-style book cover" and a "letter-style bookmark."
This project was planned with the theme of "gifting a book with a letter to convey feelings to loved ones" for "Sant Jordi's Day" (April 23), known as a day to give books and flowers to close friends. It can be used as a gift for loved ones, as well as for oneself.
Book cover created in collaboration with Osaka Joto Post Office (2026 edition)
■ How this initiative came about:
Since it was very well received last year, we decided to implement this collaboration project with Osaka Joto Post Office again this year.
"Sant Jordi's Day" is a commemorative day in Catalonia, Spain, with a culture of exchanging books and flowers. With the desire for people in Japan to also enjoy this wonderful custom related to books, a collaboration with a community-based post office was realized. By combining books and letters, which have a high affinity, we propose a new reading experience of "conveying feelings."
Book cover distributed in collaboration with the post office in 2025. The post office character "Posukuma" also visited the event in 2025, enlivening the venue.
Rose bookmark and POP created to commemorate Sant Jordi's Day to decorate the sales floor. Visitors enjoying the postbox-style book cover.
■ Features of the book cover & bookmark:
Original design paperback book cover with a postbox motif. Letter-inspired bookmark (with space to write a message). By adding a message to the book, it enhances its value as a gift and becomes a special item that can convey feelings to loved ones. The collaboration between a local post office and a local bookstore proposes a new gift style that leverages the charm of postal culture.
Front of the letter-inspired bookmark. Back of the letter-inspired bookmark (with space to write a message).
■ Distribution/Sales Information
● Distribution Start:
April 18, 2026 (Saturday) ~ *Ends when supplies run out.
● Planned Distribution Quantity: 1,000 sets (paperback book cover & bookmark)
● Distribution Method: Presented to customers who purchase paperback books. *An original Seiwado Bookstore version will be sold on the online store.
■ Special Event Held. A special event will be held for two days only on April 18 (Saturday) and 19 (Sunday), 2026.
① Post Office Character "Posukuma" will be here! Appearance times:
・10:00~11:00
・13:00~14:00
・15:00~16:00
② Post Office Original Goods Sale Date:
・10:00~16:00
■Seiwado Bookstore:
Seiwado Bookstore's original book covers with over 100 designs. Interior of Seiwado Bookstore, a local bookstore founded in Tsurumi, Osaka in 1970.
Book cover menu displayed in the store. The content changes seasonally. Many visitors from all over Japan and overseas visit, beyond their living area.
FAQ
When can I get the 'postbox-style book cover'?
It will be given as a gift to customers who purchase paperback books starting from April 18, 2026 (Saturday).
What is 'Sant Jordi's Day'?
It is a commemorative day in Catalonia, Spain, where people give books and flowers to close friends.