AI Instantly Visualizes Black-Boxed Legacy Systems | Free Campaign for Up to 200 COBOL Reverse Engineering (Design Document Generation)
Wonderful Fly Co., Ltd. has launched a free campaign for its "Wonder Robo Reverse Service," which uses AI to automatically generate design documents from legacy system source code, such as COBOL. The campaign offers free reverse engineering (design document generation) for up to 200 COBOL systems, supporting the visualization of black-boxed systems and promoting DX.
📋 Article Processing Timeline
- 📰 Published: May 8, 2026 at 23:00
- 🔍 Collected: May 8, 2026 at 14:31
- 🤖 AI Analyzed: May 8, 2026 at 15:19 (47 min after Collected)
Wonderful Fly Co., Ltd. (Chuo-ku, Tokyo) is launching a campaign to provide free reverse engineering (design document generation) for up to 200 COBOL systems through its AI service "Wonder Robo Reverse Service," which automatically generates design documents from legacy system source code.
By leveraging AI-powered automatic analysis, the service significantly reduces the time and effort traditionally required for manual design document creation. It enables the rapid acquisition of standardized design documents that can be utilized for system reconstruction, maintenance, and audit compliance.
■ Background: Black-Boxed Legacy Systems
Many Japanese companies and local governments still rely on COBOL and older systems that have been in operation for many years. However, it is common to find cases where design documents do not exist or deviate from the current system.
As a result,
"We don't know what's being done where."
"The person in charge is absent, so we can't make changes."
Such issues arise, leading to systems becoming black-boxed.
In such situations, estimating modifications and reconstructions becomes difficult, and work proceeds by trial and error. This ultimately leads to increased time and costs, placing a heavy burden on the現場 (on-site staff).
■ Service Overview
This service analyzes existing source code and visualizes what the system does as design documents, providing a starting point for understanding and reconstruction.
AI analyzes the source code and automatically generates design documents for screen configurations, databases, processing flows, and reports. It organizes the structure of systems that have become dependent on specific individuals, transforming them into a state understandable by anyone.
■ Service Features
Instantly visualize the entire system, understandable by anyone
Analyzes source code and outputs screen, DB, processing flow, and report information in a unified format. Even non-engineers can grasp the entire system.
Significantly reduce design document creation effort (up to 90% reduction)
Achieves design document creation in a short period, which traditionally took weeks to months. Based on actual code, it suppresses specification discrepancies and human errors.
Can be utilized as a foundation for reconstruction and DX promotion
Outputted design documents can be linked with FreeCode to enable web application conversion. This realizes an end-to-end process from reverse engineering to re-development.
⇒ The significant difference is the ability to understand "what the system does," not just mere code conversion.
▼ Difference between "Source → Design Document" Reverse and "Source → Source" Conversion
Comparison Item
Source → Source Conversion
Source → Design Document Reverse
Output Content
Multi-language code, implementation of ported versions
Screen design documents, table definitions, processing flows, report definitions, etc.
Main Purpose
Porting, continued operation
Specification understanding, reconstruction, business organization
Users
For programmers
PMs, SEs, business users, IT department (non-engineers) can also utilize it
Effort/Learning Cost
Re-learning and maintenance required after porting
Readable by anyone, high maintainability and reusability
■ Campaign Overview
Target: Source code developed in COBOL
Content: Free design document generation for up to 200 programs
Use Cases:
・Visualization of systems without design documents
・Efficiency improvement for maintenance and audit compliance
・Initial analysis for reconstruction and DX consideration
■ Future Outlook
Expansion of supported languages
In addition to COBOL and PowerBuilder, we will strengthen support for various legacy languages and improve analysis accuracy and processing speed.
Strengthening AI x No-code integration
We will deepen our collaboration with FreeCode and expand mechanisms for automatically generating applications based on design information.
Promoting platformization
We will proceed with functional expansion to become an integrated platform that supports not only design document generation but also modernization and cloud migration.
■ Product Introduction Page
For details on Wonder Robo Reverse Service, please visit the following page:
https://www.saasforce.co.jp/reverse/
■ Company Profile
Company Name: Wonderful Fly Co., Ltd.
Location: VORT Nihonbashi Honcho 7F, 4-2 Nihonbashi Kodenmacho, Chuo-ku, Tokyo
Representative: Masako Hirata, Representative Director
Business Activities: AI App Automatic Generation Platform "AI FreeCode Service" / Sales Support CRM "ProSales" / Log Analysis "LogWatch" / SF Apparel Inventory Management System, etc.
📩 Contact for this matter
Wonderful Fly Co., Ltd.
Sales & Marketing Department
E-mail: sales@wonderfulfly.com
URL: https://www.wonderfulfly.com
Keywords:
By leveraging AI-powered automatic analysis, the service significantly reduces the time and effort traditionally required for manual design document creation. It enables the rapid acquisition of standardized design documents that can be utilized for system reconstruction, maintenance, and audit compliance.
■ Background: Black-Boxed Legacy Systems
Many Japanese companies and local governments still rely on COBOL and older systems that have been in operation for many years. However, it is common to find cases where design documents do not exist or deviate from the current system.
As a result,
"We don't know what's being done where."
"The person in charge is absent, so we can't make changes."
Such issues arise, leading to systems becoming black-boxed.
In such situations, estimating modifications and reconstructions becomes difficult, and work proceeds by trial and error. This ultimately leads to increased time and costs, placing a heavy burden on the現場 (on-site staff).
■ Service Overview
This service analyzes existing source code and visualizes what the system does as design documents, providing a starting point for understanding and reconstruction.
AI analyzes the source code and automatically generates design documents for screen configurations, databases, processing flows, and reports. It organizes the structure of systems that have become dependent on specific individuals, transforming them into a state understandable by anyone.
■ Service Features
Instantly visualize the entire system, understandable by anyone
Analyzes source code and outputs screen, DB, processing flow, and report information in a unified format. Even non-engineers can grasp the entire system.
Significantly reduce design document creation effort (up to 90% reduction)
Achieves design document creation in a short period, which traditionally took weeks to months. Based on actual code, it suppresses specification discrepancies and human errors.
Can be utilized as a foundation for reconstruction and DX promotion
Outputted design documents can be linked with FreeCode to enable web application conversion. This realizes an end-to-end process from reverse engineering to re-development.
⇒ The significant difference is the ability to understand "what the system does," not just mere code conversion.
▼ Difference between "Source → Design Document" Reverse and "Source → Source" Conversion
Comparison Item
Source → Source Conversion
Source → Design Document Reverse
Output Content
Multi-language code, implementation of ported versions
Screen design documents, table definitions, processing flows, report definitions, etc.
Main Purpose
Porting, continued operation
Specification understanding, reconstruction, business organization
Users
For programmers
PMs, SEs, business users, IT department (non-engineers) can also utilize it
Effort/Learning Cost
Re-learning and maintenance required after porting
Readable by anyone, high maintainability and reusability
■ Campaign Overview
Target: Source code developed in COBOL
Content: Free design document generation for up to 200 programs
Use Cases:
・Visualization of systems without design documents
・Efficiency improvement for maintenance and audit compliance
・Initial analysis for reconstruction and DX consideration
■ Future Outlook
Expansion of supported languages
In addition to COBOL and PowerBuilder, we will strengthen support for various legacy languages and improve analysis accuracy and processing speed.
Strengthening AI x No-code integration
We will deepen our collaboration with FreeCode and expand mechanisms for automatically generating applications based on design information.
Promoting platformization
We will proceed with functional expansion to become an integrated platform that supports not only design document generation but also modernization and cloud migration.
■ Product Introduction Page
For details on Wonder Robo Reverse Service, please visit the following page:
https://www.saasforce.co.jp/reverse/
■ Company Profile
Company Name: Wonderful Fly Co., Ltd.
Location: VORT Nihonbashi Honcho 7F, 4-2 Nihonbashi Kodenmacho, Chuo-ku, Tokyo
Representative: Masako Hirata, Representative Director
Business Activities: AI App Automatic Generation Platform "AI FreeCode Service" / Sales Support CRM "ProSales" / Log Analysis "LogWatch" / SF Apparel Inventory Management System, etc.
📩 Contact for this matter
Wonderful Fly Co., Ltd.
Sales & Marketing Department
E-mail: sales@wonderfulfly.com
URL: https://www.wonderfulfly.com
Keywords: