
Frequently bought together
Total price
Your bundle discount is applied at checkout.
Specialty Replicas
At Sword Slice, we’re committed to excellence in every blade we create. Our katanas and swords reflect unmatched quality, precision craftsmanship, and our passion for delivering the best.
For Fans by Fans
We create meticulously crafted replicas made by fans, for fans. From iconic anime to beloved games, movies, and TV series, our collection captures the detail, essence, and spirit of every character’s weapon.
New Products Every Month
We’re always adding new and exciting products for our customers - whether it’s a katana from the latest anime or a greatsword from a fan-favorite game. Our goal is to continually grow and expand our collection.
Frequently asked questions
What material is the butterfly knife made from?
Is the blade sharp?
What is the size of the knife?
Is this knife spring-loaded or assisted open?
Is this knife inspired by Demon Slayer?
Can it be used for cosplay?
Is it safe for flipping practice?
Who is this butterfly knife designed for?
Is this considered a toy?
How do I care for the knife?
Kokushibo's Demon Eye Butterfly Knife - Demon Slayer (Metal)

