1. Introduction
This manual provides essential information for the safe handling, assembly, and maintenance of your ziqing Demon Katana Sword, Rengoku Kyoujurou model. This product is designed as a cosplay prop and decorative item, not a functional weapon. Please read all instructions carefully before use.
2. Product Overview
The ziqing Demon Katana Sword is a detailed replica designed for cosplay and display. It features a polypropylene blade and handle, crafted to resemble the Rengoku Kyoujurou's katana from the anime series. The blade is intentionally not sharp for safety.

Figure 2.1: Complete ziqing Demon Katana Sword (Rengoku Kyoujurou model) with included scabbard and belt.
2.1 Dimensions and Materials
- Total Length: Approximately 31.29 inches (79.5 cm)
- Blade Length: Approximately 20 inches (50.8 cm)
- Handle Length: Approximately 9 inches (22.8 cm)
- Scabbard Length: Approximately 21 inches (53.3 cm)
- Weight: Approximately 0.8 pounds (360 grams)
- Blade Material: Polypropylene
- Handle Material: Polypropylene, Iron

Figure 2.2: Detailed dimensions of the katana components.
3. Setup and Assembly
3.1 Attaching the Belt
The katana comes with an adjustable belt for carrying. To attach the belt:
- Locate the two loops on the belt.
- Slide the scabbard through these loops.
- Adjust the belt length using the buckles for a comfortable fit.

Figure 3.1: Proper attachment of the carrying belt to the scabbard.
4. Operating and Safe Handling
This product is a prop and should be handled with care to prevent damage and ensure safety.
- Intended Use: This katana is designed for cosplay, theatrical performances, decoration, and collection. It is not intended for sparring, combat, or any activity that could cause injury or damage.
- Blade Safety: The blade is made of polypropylene and is not sharp. However, avoid striking people or objects with force, as this can still cause injury or damage to the prop.
- Flexibility: The blade is moderately bendable, as shown in Figure 4.1. Do not excessively bend or apply extreme force, as this may cause permanent deformation or breakage.

Figure 4.1: Demonstration of blade flexibility.
- Storage: When not in use, keep the katana sheathed in its scabbard. Store it in a safe place away from direct sunlight, extreme temperatures, and out of reach of small children.
- Supervision: Children using this prop should always be supervised by an adult.
5. Maintenance
- Cleaning: Wipe the blade and handle with a soft, dry cloth to remove dust and fingerprints. For stubborn marks, a slightly damp cloth can be used, followed by immediate drying. Avoid abrasive cleaners or solvents.
- Storage: Store the katana in a cool, dry place. Prolonged exposure to high humidity or direct sunlight may affect the material over time.
- Inspection: Periodically inspect the katana for any signs of wear or damage, especially before and after use in cosplay events.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Blade appears loose in handle. | Normal slight movement for a prop, or minor manufacturing tolerance. | Ensure the blade is fully inserted. Avoid excessive force or twisting. If movement is significant, contact support. |
| Scabbard does not hold blade securely. | Minor manufacturing tolerance or wear. | Ensure the blade is inserted correctly. If the issue persists, handle with extra care to prevent accidental unsheathing. |
| Belt buckles are stiff. | New product stiffness. | Work the buckles gently to loosen them. Do not force them, as this may cause breakage. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | ziqing |
| Model Name | Demon Katana Sword (Rengoku Kyoujurou Variant) |
| Total Length | 31.29 inches (approx.) |
| Blade Length | 20 inches (approx.) |
| Handle Length | 9 inches (approx.) |
| Scabbard Length | 21 inches (approx.) |
| Weight | 0.8 pounds (approx. 376.48 grams) |
| Blade Material | Polypropylene |
| Handle Material | Polypropylene, Iron |
| Color | Rengoku Kyoujurou-31inch (specific design) |
| Intended Use | Cosplay, Decoration, Collection |
8. Warranty and Support
8.1 Warranty Information
According to product specifications, there is no explicit warranty provided for this item. Please inspect the product upon receipt for any manufacturing defects. If you encounter any issues, refer to the support information below.
8.2 Customer Support
For any questions, concerns, or issues regarding your ziqing Demon Katana Sword, please contact the seller directly through the platform where the purchase was made. Provide your order number and a detailed description of the issue for prompt assistance.