Hatsukokoro Ryusui AO2 Damascus Custom Mushroom Kiritsuke 240mm
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Hatsukokoro Ryusui AO2 Damascus Custom Mushroom Kiritsuke 240mm
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SPECIFICATIONS
Knife Style: Kiritsuke
Steel Type: Carbon Steel
Blade Material: Aogami Blue #2
Blade Finish: Blasted Nashiji Style with Damascus
Blade Hardness: 62HRC (+/-1)
Bevel: Double
Handle: Olive Wood and Mushroom Infused Epoxy
Blade Length: 240mm
Heel Height: 51mm
Spine Thickness: 2.80mm tapered to 2.30mm
Weight: 200g
Some custom builds are designed to stand out. Others feel as though the blade and handle were always meant to belong together.
This 240mm Kiritsuke began as a remarkable hand-forged Nigara Hamono blade and was transformed here at Kakushin into a true one-of-a-kind creation. The knife has been paired with a custom olive wood and epoxy handle featuring a translucent resin tip infused with a real red-capped mushroom, creating a piece that feels equally inspired by nature, craftsmanship, and artistry.
The handle immediately draws attention. Warm olive wood grain transitions naturally into crystal-clear resin, allowing the embedded mushroom to appear almost suspended in time. As light passes through the translucent tip, different details emerge from within the resin, creating depth and movement that constantly changes depending on angle and lighting. The result is striking, yet surprisingly elegant, flowing into the blade.
The blade itself carries all the hallmarks that have made Nigara Hamono one of Japan's most respected forging houses. Hand-forged in Aomori, Japan, it possesses the distinctive character and attention to detail that collectors and enthusiasts immediately recognize.
One of the first details you'll notice is the exposed forged spine. Rather than hiding the blade's construction, Nigara proudly leaves elements of the forging process visible, creating a look that feels authentic, purposeful, and deeply connected to traditional Japanese craftsmanship. It serves as a reminder that this is not a mass-produced knife, but the result of skilled hands and generations of experience.
The spine begins with substantial forged thickness near the heel before gradually tapering toward the tip, creating a balance that feels both powerful and responsive. That distal taper gives the knife a confident presence while maintaining the agility expected from a high-performance Kiritsuke. Whether tackling large ingredients, fine slicing work, or precision cuts, the blade feels controlled and remarkably refined in hand.
The finish further enhances the knife's character. A blasted Nashiji texture creates a soft, stone-like appearance across the blade, while the Damascus layers beneath introduce subtle movement and contrast. The effect is sophisticated rather than flashy, revealing more detail the longer you spend with it.
A genuine 1 of 1. Once sold, this exact knife will never exist again.
◻️ Additional Information
Please note that colours, shading, and overall appearance may vary slightly between photos and the product you receive. Lighting, camera exposure, and reflections on materials like steel, epoxy, and wood can all create subtle differences.
Many of our items are handmade, which means each piece has its own character. Minor variations in pattern, texture, or finish are normal and part of the craft.
If you’d like to see additional photos or close-ups of any item, feel free to request them before or after placing your order—especially for one-of-a-kind pieces. We’re always happy to help you choose the perfect knife or handle.
◻️ Sharp Certified
Before our knives are shipped, each one undergoes a rigorous sharpness test to ensure they meet the highest standards of quality. Our BESS Certified sharpness scale will guarantee that your knives deliver the smoothest cuts.
This commitment to sharpness not only guarantees that you receive a product that's ready to perform at its best but also reflects our dedication to delivering excellence in every aspect of our field.
◻️ Shipping & Returns
Every product listed on our website is physically in stock at our shop and typically ships within 24 hours — giving us enough time for sharpening and proper packaging.
The only exceptions are custom knife assemblies or engraving, which may require 3-5 days before shipping. Everything is done in-house, so even with the extra steps, it’s still exceptionally fast.
Canadian orders can say goodbye to unexpected duties, additional customs fees and exchange rate fluctuations; all our prices are clear and upfront.
For international orders, we take care of providing the declarations documents on items from foreign countries.
We know choosing a knife online isn’t always easy. To make things stress-free, we offer a flexible 30-day Return Policy on regular-priced items. Take a look at our full policy for all the details!
◻️ Contact Us
We are at your service through email, social media, or even by phone, where you can have a direct conversation with one of our team members during our business hours.
Whether you require assistance with your existing product, have inquiries about a potential purchase, need more specific details, additional photos, or even a video to get a better sense of the product in a real human hand, we've got you covered.
Don't hesitate to get in touch.