[Kanagawa Spring Family Event] 100,000 Enthusiasts! New Series of 'Mystery Hunter' Riddle-Solving Adventure Rally Comes to Parks in Yokohama and Kawasaki
NPO Tashizan will hold the popular 'Mystery Hunter' riddle-solving event for families at parks in Yokohama and Kawasaki from April to June 2026. Featuring new series like 'Legendary Sword' and 'Phantom Thief vs. Detective,' it offers fun and learning for children of all ages.
📋 Article Processing Timeline
- 📰 Published: April 8, 2026 at 04:01
- 🔍 Collected: April 7, 2026 at 19:30
- 🤖 AI Analyzed: April 17, 2026 at 17:26 (237h 55m after Collected)
## What is the Family-Friendly Riddle-Solving Event 'Mystery Hunter'?
'Mystery Adventure Rally: Mystery Hunter' is an experiential riddle-solving event that parents and children can participate in together.
Endorsed by various boards of education, the event has been held in parks nationwide during the spring and autumn seasons since 2022. Every year, more than 100,000 families participate.
This popular event is scheduled to take place in Kanagawa Prefecture this spring!
Participants will tackle 'mysteries' that suddenly appear in the park. They will walk around searching for clues and questions set up in various locations to unravel the hidden secrets.
Different storylines unfold, such as the 'Legendary Sword Series' revolving around a blade to seal a demon king, and the 'Phantom Thief vs. Detective Series' chasing stolen gems. Each series offers unique challenges. Additionally, there are three difficulty levels to choose from, making it enjoyable for everyone from preschoolers to upper elementary school students.
One of the attractions is the ability to deepen learning through play, as the riddles incorporate textbook content and elements of the SDGs (Sustainable Development Goals).
Please join us to create wonderful memories with your family!
## Held in Parks in Yokohama and Kawasaki! Event Locations and Schedule
Events will be held sequentially at various parks in Kanagawa Prefecture.
### Daishi Park (Kawasaki City)
*Note: The press release incorrectly lists this in Yokohama, but Daishi Park is in Kawasaki.*
- April 18 (Sat): Legendary Sword Series
- April 19 (Sun): Cyborg Series
- May 2 (Sat): Gurenki (Crimson Demon) Series
- May 3 (Sun): Phantom Thief vs. Detective Series
### Kishine Park (Yokohama City)
*Note: The press release incorrectly lists this in Kawasaki, but Kishine Park is in Yokohama.*
- April 25 (Sat): Legendary Sword Series
- April 26 (Sun): Cyborg Series
- April 29 (Wed): Gurenki (Crimson Demon) Series
*Event information is subject to change without notice. Please check the official event website for details.*
## Age-Appropriate Courses for Elementary and Preschool Children
1. **Easy Course (For preschoolers to 1st graders, Introductory)**
Focuses on counting and identifying names of objects, designed for preschool children to enjoy.
2. **Normal Course (For 1st to 3rd graders, Standard)**
Features problems that combine two hints or require simple calculations, allowing kids to enjoy the satisfaction of solving mysteries.
3. **Challenge Course (For 3rd grade and up, Advanced)**
Requires combining multiple hints and thinking outside the box, helping to develop both academic knowledge and creativity.
### Voice of Previous Participants
- "Before I knew it, even the adults were completely absorbed!"
- "My child usually dislikes math but seems to love calculation problems in riddles."
- "Since they are always on games or smartphones at home, we had a lot of conversation for the first time in a while."
- "I realized that since they started elementary school, we rarely walk through a park holding hands."
### Implementation Overview
- **Locations:** Parks across Kanagawa Prefecture (See website for details)
- **Time:** 10:00 AM – 4:00 PM (Final reception at 2:30 PM)
- **Estimated Duration:** Approx. 1 to 1.5 hours
- **Participation Fee:** 800 yen per child (Free for guardians/companions)
- **Target Audience:** Preschoolers to Elementary students (All grades)
### How to Apply / Inquiries
For details and registration for 'Mystery Hunter,' please visit: [https://www.npo-tashizan.jp/](https://www.npo-tashizan.jp/)
Organizer: NPO Tashizan
Official Website: [https://www.npo-tashizan.jp/](https://www.npo-tashizan.jp/)
Official LINE: [https://lin.ee/9w0Ireq](https://lin.ee/9w0Ireq)
'Mystery Adventure Rally: Mystery Hunter' is an experiential riddle-solving event that parents and children can participate in together.
Endorsed by various boards of education, the event has been held in parks nationwide during the spring and autumn seasons since 2022. Every year, more than 100,000 families participate.
This popular event is scheduled to take place in Kanagawa Prefecture this spring!
Participants will tackle 'mysteries' that suddenly appear in the park. They will walk around searching for clues and questions set up in various locations to unravel the hidden secrets.
Different storylines unfold, such as the 'Legendary Sword Series' revolving around a blade to seal a demon king, and the 'Phantom Thief vs. Detective Series' chasing stolen gems. Each series offers unique challenges. Additionally, there are three difficulty levels to choose from, making it enjoyable for everyone from preschoolers to upper elementary school students.
One of the attractions is the ability to deepen learning through play, as the riddles incorporate textbook content and elements of the SDGs (Sustainable Development Goals).
Please join us to create wonderful memories with your family!
## Held in Parks in Yokohama and Kawasaki! Event Locations and Schedule
Events will be held sequentially at various parks in Kanagawa Prefecture.
### Daishi Park (Kawasaki City)
*Note: The press release incorrectly lists this in Yokohama, but Daishi Park is in Kawasaki.*
- April 18 (Sat): Legendary Sword Series
- April 19 (Sun): Cyborg Series
- May 2 (Sat): Gurenki (Crimson Demon) Series
- May 3 (Sun): Phantom Thief vs. Detective Series
### Kishine Park (Yokohama City)
*Note: The press release incorrectly lists this in Kawasaki, but Kishine Park is in Yokohama.*
- April 25 (Sat): Legendary Sword Series
- April 26 (Sun): Cyborg Series
- April 29 (Wed): Gurenki (Crimson Demon) Series
*Event information is subject to change without notice. Please check the official event website for details.*
## Age-Appropriate Courses for Elementary and Preschool Children
1. **Easy Course (For preschoolers to 1st graders, Introductory)**
Focuses on counting and identifying names of objects, designed for preschool children to enjoy.
2. **Normal Course (For 1st to 3rd graders, Standard)**
Features problems that combine two hints or require simple calculations, allowing kids to enjoy the satisfaction of solving mysteries.
3. **Challenge Course (For 3rd grade and up, Advanced)**
Requires combining multiple hints and thinking outside the box, helping to develop both academic knowledge and creativity.
### Voice of Previous Participants
- "Before I knew it, even the adults were completely absorbed!"
- "My child usually dislikes math but seems to love calculation problems in riddles."
- "Since they are always on games or smartphones at home, we had a lot of conversation for the first time in a while."
- "I realized that since they started elementary school, we rarely walk through a park holding hands."
### Implementation Overview
- **Locations:** Parks across Kanagawa Prefecture (See website for details)
- **Time:** 10:00 AM – 4:00 PM (Final reception at 2:30 PM)
- **Estimated Duration:** Approx. 1 to 1.5 hours
- **Participation Fee:** 800 yen per child (Free for guardians/companions)
- **Target Audience:** Preschoolers to Elementary students (All grades)
### How to Apply / Inquiries
For details and registration for 'Mystery Hunter,' please visit: [https://www.npo-tashizan.jp/](https://www.npo-tashizan.jp/)
Organizer: NPO Tashizan
Official Website: [https://www.npo-tashizan.jp/](https://www.npo-tashizan.jp/)
Official LINE: [https://lin.ee/9w0Ireq](https://lin.ee/9w0Ireq)
FAQ
Will the event be held in case of rain?
Generally, yes, but it may be cancelled in severe weather. Please check the official LINE or website for the latest status on the day.
Can I participate on the day without a reservation?
Yes, you can participate if you arrive by the final reception time (14:30), but pre-registration is recommended to avoid crowds.
What is the target age group?
Three courses are available catering to a wide range, from preschoolers (Easy Course) to upper elementary students (Challenge Course).