This Summer, Solve Puzzles with Your Kids at Popular Osaka Spots! Kaiyukan Joins 'Odekake Plus+', the Ultimate Blend of Exploring, Solving, and Learning

Zoshindo Publishing Co., Ltd. (Headquarters: Nishi-ku, Osaka; President: Yasuharu Okamoto) announces the release of new content featuring 'Kaiyukan' (launch date: July 16, 2026) on its experiential learning platform 'Odekake Plus+', designed to blend travel and education—just in time for the summer vacation season.

Launched in September 2025, the dedicated 'Odekake Plus+' website (https://www.manavi.zoshindo.co.jp/odekake/) offers quests (quizzes) set at various Osaka destinations, including cultural facilities. Participants, surrounded by unique characters, select quests based on original adventure stories and solve puzzles by collecting clues on-site. Children and parents can enjoy a scavenger-hunt-like experience together.

● What is Odekake Plus+?

'Odekake Plus+' is a fresh, innovative learning concept proposed by Zoshindo Publishing, a textbook publisher celebrating 135 years in business. It combines travel and learning by offering quiz-style adventures at various Osaka locations. Children and their guardians visit sites in person, search for clues from scenery and exhibits (or products), and solve quests prepared on the dedicated website.

● How to Play Odekake Plus+

※ Image is for illustration purposes only.

▼ Watch the gameplay introduction video here:

https://www.instagram.com/p/DVfKWsSCcaW/

● Highlight Alert! Kaiyukan Joins as a New Odekake Destination

Quests are co-created in collaboration with cultural institutions. The newly added 'Kaiyukan' will feature quests focused on marine life characteristics and environmental themes, using real animals and faithfully recreated natural habitats within the aquarium.

・Kaiyukan (Minato-ku, Osaka City) ... Launching July 16, 2026

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● Features of Odekake Plus+

A Playful, Immersive World

The experience includes original stories and characters designed to engage children without making them feel like they're studying. Character design is by popular illustrator Sanosuke Sakuma, known for his work on trading card illustrations (https://x.com/sakumasanosuke).

Learning-Driven Design

Completing a quest isn't the end—Zoshindo uses its expertise as a textbook publisher to include features that spark children's curiosity further and connect learning to school curricula.

※ Image is for illustration purposes only.

Expanding Odekake Spots Where You Can Play and Learn Through Quests

・Osaka City Museum of Natural History (Higashisumiyoshi-ku, Osaka)

・Expo '70 Commemorative Park (Suita City, Osaka Prefecture)

・National Museum of Ethnology (Suita City, Osaka Prefecture)

・Osaka Municipal Museum of Housing and Living 'Osaka Life of the Past and Present' (Kita-ku, Osaka)

・Osaka Sewerage Science Museum (Konohana-ku, Osaka)

・Osaka Castle Park (Chuo-ku, Osaka)

More facilities will be added in the future, enabling enjoyable content across various cultural and commercial sites in Osaka.

● Stay Updated via Our Official Instagram

Adventure Association Osaka Headquarters | Odekake Plus+ (@osaka_bouken)

Follow for the latest updates, tips for enjoying outings with your family, and information on Osaka's attractions and gourmet spots, all delivered by the Adventure Association and characters from 'Odekake Plus+'.

● Introducing 'The Backstage of Odekake Plus+'

The parenting-focused educational information site 'manavi' features column articles revealing the project's origin story and the unique design approaches only a textbook publisher could offer. The latest article shares tips for making museum visits enjoyable for families.

Be sure to check it out:

[Vol.3] https://www.manavi.zoshindo.co.jp/odekake-uragawa3/

Parent-Focused Educational Information Site 'manavi'

We hope children living in the future will encounter that 'aha!' moment of wonder through learning and experiences—and that it will help them shine in life. 'manavi' is an educational information site for parents who wish to guide their children's learning.

We also introduce topics such as key learning themes for Japanese, English, and Math. Please visit:

https://www.manavi.zoshindo.co.jp

Company Overview

Zoshindo Publishing Co., Ltd.

An educational publisher founded in 1890. It pioneered Japan's first drill-style textbooks and established the 'comprehensive reference book' genre with the concept of 'everything you want to know.' For over 130 years since its founding, it has consistently developed cutting-edge educational materials, including the long-selling 'Jiyu Jizai' series (70 years in publication, 27 million copies sold). With the mission of 'delivering the best learning to everyone who learns,' the company now expands beyond publishing into digital ventures, overseas operations, and diverse learning programs for children with developmental characteristics and foreign children. It also operates NEXT LEARNING Labs, conducting demonstration research on AI, VR, and developing content for new fields.

Headquarters: 3-3-6 Shimmachi, Nishi-ku, Osaka City

Representative: President Yasuharu Okamoto

http://www.zoshindo.co.jp/

70th Anniversary Website for the 'Chugaku Jiyu Jizai' Reference Book:

https://www.zoshindo.co.jp/special/jiyujizai-70th-junior.html

Media Inquiries and Contact

Zoshindo Publishing Co., Ltd.

Contact: Yamamoto, Public Relations & Marketing Division, Management Department

E-mail: [email protected]