Junior High School English Teaching Materials Completed Speedily! Kairyudo Publishing Launches "kAIryu-kun," an AI Teaching Material Creation App Compliant with Sunshine, Supporting Teacher Work Style Reform
Kairyudo Publishing has launched "kAIryu-kun," an AI-powered teaching material creation app for junior high school English teachers. By training AI with data from their copyrighted English textbook "Sunshine," the app automatically generates test questions and reading materials tailored to students' learning progress, significantly reducing teachers' preparation time.
📋 Article Processing Timeline
- 📰 Published: April 29, 2026 at 01:30
- 🔍 Collected: April 28, 2026 at 17:02
- 🤖 AI Analyzed: April 28, 2026 at 18:07 (1h 5m after Collected)
Kairyudo Publishing Co., Ltd. (Headquarters: Bunkyo-ku, Tokyo; Representative Director and President: Hiroyuki Iguchi) has developed and launched "kAIryu-kun," an AI application for automatically generating teaching materials for junior high school English teachers.
In recent years, as the use of generative AI in educational settings has been explored, challenges have been pointed out with general-purpose AI models, such as "unlearned words for students being mixed into problems" and "difficulty in designing appropriate prompts to obtain suitable output." This service solves these problems by training AI with data from Kairyudo Publishing's copyrighted English textbook, Sunshine. It generates test questions and long reading materials tailored to students' learning progress with intuitive operations, significantly reducing the time teachers spend preparing lessons.
▼kAIryu-kun Official Website
https://www.kairyudo.co.jp/kairyu_promotion/
Background of Development and Positioning Specialized in Teacher Support
Currently, many AI services developed for educational institutions are specialized in supporting students' self-learning (e.g., interactive learning). On the other hand, with teachers' long working hours becoming a serious social issue, reducing the workload of daily material creation and test problem construction is an urgent task. "kAIryu-kun" was developed based on a design philosophy specialized in improving teachers' operational efficiency.
Three Core Functions of "kAIryu-kun"
"Simple Mode" allows material creation with just clicks.
1. No Prompts Required, Intuitive UI
There is no need to input complex instructions. Various teaching materials can be completed by simply selecting the grade, unit, and question format with buttons.
2. Synergy of High-Precision Output Utilizing Proprietary Copyrighted Data and Final Confirmation by Teachers
It has been pre-trained with textbook data copyrighted by Kairyudo Publishing, and outputs teaching materials tailored to the grammar and vocabulary levels students are learning during the target period. Due to the nature of generative AI, 100% perfect output, such as preventing the mixing of unlearned grammar and vocabulary, cannot be guaranteed by the system. By having AI rapidly handle "base material creation (0 to 90%)" and teachers perform "final confirmation and fine-tuning from a professional perspective (the remaining 10%)", the quality of teaching materials is ensured while dramatically shortening preparation time.
Correction prompts are also preset.
Questions and answers can be printed as separate sheets.
3. Seamless Output to General-Purpose Software (Word/Print Compatible)
The generated text data can be directly copied and pasted into software commonly used by teachers, such as Microsoft Word and Excel. It also supports immediate printing in a pre-formatted layout, allowing for introduction without changing existing workflows.
Flat-Rate Plan per School
Considering ease of incorporation into school budgets, a flat-rate system of one license per school has been adopted. It can be used on all teacher terminals within the introducing school.
Years of Use
AI Usage Count/Month
*Voice generation and search functions can be used without limit.
List Price (Excluding Tax)
1-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
22,000 yen (20,000 yen)
2-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
42,900 yen (39,000 yen)
3-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
63,800 yen (58,000 yen)
Comprehensive Support System for Adopting Schools
A dedicated support site has been opened for educational institutions facing challenges in introducing AI tools. It provides operation manuals, FAQs, and email support by specialized staff. Furthermore, practical classroom application examples and the latest features will be continuously delivered via the official LINE account.
▼kAIryu-kun Support Site
https://www.kairyudo.co.jp/aiweb/
Free Trial Implementation
A free trial version is offered for educational institution personnel to verify the effectiveness of this service.
Free Trial Application
Notes on Use
[Data Handling and Security]
■Purpose of Log Use: Input data is saved as logs only for the purpose of improving the quality of this software and for analysis.
■Protection of Personal Information: From a security perspective, inputting information that can identify individuals, such as student names, is prohibited.
[Scope of Use and System Specifications]
■Limited Eligibility: Only English teachers who teach at contracted schools can use it (diversion to other schools or subjects is not allowed).
■Function Usage Limit: Test questions, extensive reading materials, and image generation are each limited to "100 times/month (up to 200 times can be carried over to the next month)". *Voice generation and search functions are unlimited.
■Confirmation of Output Results: Due to the nature of AI, complete accuracy cannot be guaranteed.
In recent years, as the use of generative AI in educational settings has been explored, challenges have been pointed out with general-purpose AI models, such as "unlearned words for students being mixed into problems" and "difficulty in designing appropriate prompts to obtain suitable output." This service solves these problems by training AI with data from Kairyudo Publishing's copyrighted English textbook, Sunshine. It generates test questions and long reading materials tailored to students' learning progress with intuitive operations, significantly reducing the time teachers spend preparing lessons.
▼kAIryu-kun Official Website
https://www.kairyudo.co.jp/kairyu_promotion/
Background of Development and Positioning Specialized in Teacher Support
Currently, many AI services developed for educational institutions are specialized in supporting students' self-learning (e.g., interactive learning). On the other hand, with teachers' long working hours becoming a serious social issue, reducing the workload of daily material creation and test problem construction is an urgent task. "kAIryu-kun" was developed based on a design philosophy specialized in improving teachers' operational efficiency.
Three Core Functions of "kAIryu-kun"
"Simple Mode" allows material creation with just clicks.
1. No Prompts Required, Intuitive UI
There is no need to input complex instructions. Various teaching materials can be completed by simply selecting the grade, unit, and question format with buttons.
2. Synergy of High-Precision Output Utilizing Proprietary Copyrighted Data and Final Confirmation by Teachers
It has been pre-trained with textbook data copyrighted by Kairyudo Publishing, and outputs teaching materials tailored to the grammar and vocabulary levels students are learning during the target period. Due to the nature of generative AI, 100% perfect output, such as preventing the mixing of unlearned grammar and vocabulary, cannot be guaranteed by the system. By having AI rapidly handle "base material creation (0 to 90%)" and teachers perform "final confirmation and fine-tuning from a professional perspective (the remaining 10%)", the quality of teaching materials is ensured while dramatically shortening preparation time.
Correction prompts are also preset.
Questions and answers can be printed as separate sheets.
3. Seamless Output to General-Purpose Software (Word/Print Compatible)
The generated text data can be directly copied and pasted into software commonly used by teachers, such as Microsoft Word and Excel. It also supports immediate printing in a pre-formatted layout, allowing for introduction without changing existing workflows.
Flat-Rate Plan per School
Considering ease of incorporation into school budgets, a flat-rate system of one license per school has been adopted. It can be used on all teacher terminals within the introducing school.
Years of Use
AI Usage Count/Month
*Voice generation and search functions can be used without limit.
List Price (Excluding Tax)
1-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
22,000 yen (20,000 yen)
2-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
42,900 yen (39,000 yen)
3-Year Version
Test, Extensive Reading, Image Generation: 100 times/month each
63,800 yen (58,000 yen)
Comprehensive Support System for Adopting Schools
A dedicated support site has been opened for educational institutions facing challenges in introducing AI tools. It provides operation manuals, FAQs, and email support by specialized staff. Furthermore, practical classroom application examples and the latest features will be continuously delivered via the official LINE account.
▼kAIryu-kun Support Site
https://www.kairyudo.co.jp/aiweb/
Free Trial Implementation
A free trial version is offered for educational institution personnel to verify the effectiveness of this service.
Free Trial Application
Notes on Use
[Data Handling and Security]
■Purpose of Log Use: Input data is saved as logs only for the purpose of improving the quality of this software and for analysis.
■Protection of Personal Information: From a security perspective, inputting information that can identify individuals, such as student names, is prohibited.
[Scope of Use and System Specifications]
■Limited Eligibility: Only English teachers who teach at contracted schools can use it (diversion to other schools or subjects is not allowed).
■Function Usage Limit: Test questions, extensive reading materials, and image generation are each limited to "100 times/month (up to 200 times can be carried over to the next month)". *Voice generation and search functions are unlimited.
■Confirmation of Output Results: Due to the nature of AI, complete accuracy cannot be guaranteed.