Team Hijikinoheya Software Licensing

This document explains the licensing structure of software provided by Team Hijikinoheya. The software uses a hybrid licensing model that balances open-source principles with protection of project identity and creative expression.

Chapter 1: Licensing Overview

1.1 Why a Hybrid License

Team Hijikinoheya shares source code and technical mechanisms openly while protecting names, UI, text, and branding. To achieve this, we adopt a hybrid license combining GPL and the Team Hijikinoheya Original License.

1.2 License Types

• GNU General Public License (GPL v2 / v3)
  

• Team Hijikinoheya Original License
  

Each component of the software may fall under a different license.

Chapter 2: GNU General Public License (GPL)

2.1 Scope

• Source code explicitly marked as GPL
  

• Open-source modules
  

• GPL-compatible third-party libraries
  

2.2 Permitted Actions

• Use, study, and modify the code
  

• Redistribute modified versions under the same GPL
  

• Commercial and non-commercial use
  

2.3 Notes

• Include the GPL license text when redistributing
  

• GPL covers code and mechanisms, not branding or expression
  

Chapter 3: Team Hijikinoheya Original License

3.1 Purpose

• Protect brand and identity
  

• Prevent misleading clones or derivatives
  

• Preserve UI, text, and design integrity
  

3.2 Covered Components

3.2.1 Trademarks and Branding: App names, project names, logos, official icons, official site references

3.2.2 UI / UX and Visual Expression: Official build UI designs, layout, color schemes, screen composition, icons, illustrations, images (functional logic excluded)

3.2.3 Textual and Creative Content: In-app text, help, descriptions, official documentation, promotional text, narrative content (technical explanations and comments excluded)

3.2.4 Proprietary or Non-public Code: Unreleased source code, parts marked as “Original License” or “Proprietary”

3.3 Restrictions

• No modification, redistribution, or commercial use without prior permission
  

Chapter 4: Explicit Exclusions

• Software structure, design concepts, algorithms
  

• Functional UI layout and logic
  

• Public data structures and communication protocols
  

• Public APIs and configuration formats
  

Expression is protected, mechanisms are not restricted.

Chapter 5: Redistribution, Derivatives, and Commercial Use

5.1 Derivatives

• GPL components only: allowed under GPL
  

• Full application redistribution: requires permission
  

5.2 Branding and UI

• Unauthorized use prohibited
  

5.3 Commercial Use

• GPL components only: allowed under GPL
  

• Including Original License components: requires prior approval
  

Chapter 6: Disclaimer, Governing Law, and Contact

6.1 Disclaimer

• Software provided "AS IS", without any warranty
  

6.2 Governing Law and Jurisdiction

• Japanese law applies; Japanese courts have exclusive jurisdiction
  

6.3 Contact

• See Team Hijikinoheya official website for licensing inquiries