【Sales end on 8/20 (Thu)】Anime "Assassination Classroom" x KARATZ Collaboration Nagisa Shiota Model Ring

To commemorate the 10th anniversary of the TV anime "Assassination Classroom," the specialty jewelry store KARATZ is releasing a second line of collaboration jewelry. Authentic rings that express the world of the anime through gemstones will be available.

Click here for product list


【Collaboration Jewelry Highlights】
・We use high-quality gemstones carefully selected by skilled gem buyers.
・As a specialty gemstone store, we select gemstones based on each character's color and meaning, and finish them with the delicate sculpting techniques of Japanese artisans.

Sales Period: Monday, August 17, 2026
※Sales may end or be temporarily suspended once the maximum number of items available for sale is reached.

Estimated Delivery Date:
Scheduled for late September 2026
※As these are made-to-order, delivery may be earlier or later depending on production status.


-Nagisa Shiota Model Ring-
This ring features a design inspired by Nagisa Shiota.
It incorporates soft lines inspired by Nagisa's hairstyle, and the arm is engraved to evoke a knife. The inside is engraved with "Class 3-E" to represent a connection to the story.
The center stone is a Swiss Blue Topaz reminiscent of his hair color, and the side stones are Blue Sapphires representing his clear eyes.
It's a design characteristic of Nagisa, conveying his quiet gentleness and hidden strength.

【Product Specifications】

【Care Instructions】

・Gently wipe off sweat and dirt with a soft cloth, and if necessary, lightly wash with water or lukewarm water and dry.
・When using a microfiber cloth, be careful as hard debris or sand adhering to it may scratch the item.
・Avoid using polishing cloths with abrasives or silver-specific cleaners/solutions, as they may cause the plating to peel off.

【Important Notes】

・All images are for illustrative purposes only.
・All sizes are approximate. Slight variations may occur.
・Due to the nature of natural stones, there may be color differences from the samples. Please be assured that each gemstone is inspected to ensure it does not detract from the image of the work.

■Regarding Estimated Shipping Date
・Delivery times are approximate.
・Delivery times may be earlier or later due to manufacturing circumstances.


■Regarding Payment Methods
The following payment methods are available at KARATZ STORE:
Credit Card / Convenience Store Payment / Bank Transfer / Apple PAY / Google Pay / PayPay / d-payment / Merpay / Deferred Payment (Paidy) / Alipay / AlipayHK / WeChat Pay

■Regarding Resizing Silver Items
Silver items cannot be resized.

karatz_ID:ansatsu_40000385

©Yusei Matsui/Shueisha・Anime "Assassination Classroom" Production Committee 2025