[Sales end 11/13 (Fri)] Anime "Assassination Classroom" x KARATZ Collaboration: Koro-sensei Model Necklace

The TV anime "Assassination Classroom" has collaborated with jewelry specialty store KARATZ to produce authentic jewelry using gemstones.

Click here for the special page


【Highlights of the Collaboration Jewelry】
・Uses high-quality gemstones carefully selected by expert jewelry buyers.
・Finished with gold plating over SV925 to ensure lasting beauty.
・Each piece is meticulously crafted by skilled domestic artisans.

Sales Period: Until Friday, November 13, 2026
※Sales may end or be temporarily suspended once the available quantity is reached.

Scheduled Delivery Date:
Scheduled for mid-December 2026
※As this is a made-to-order item, delivery dates may vary depending on production status.


-Koro-sensei Model Necklace-
A charming Koro-sensei model necklace featuring a centerpiece gemstone: a clear lemon quartz intricately carved to resemble Koro-sensei’s face.

【Product Specifications】

【Care Instructions】
・Gently wipe off sweat and dirt with a soft cloth. If necessary, rinse lightly with water or lukewarm water and dry.
・When using a microfiber cloth, be careful, as dirt or sand particles on the cloth may scratch the item.
・Avoid using abrasive cloths, silver-specific cleaners, or cleaning liquids, as these may cause the plating to peel.

【Notes】
・All images are for illustrative purposes only.
・All sizes are approximate and may have slight variations.
・Due to the nature of natural stones, there may be differences in color compared to the samples. Rest assured that we inspect every gemstone individually to ensure the final product maintains its intended quality.

■ Regarding Scheduled Shipping Date
・Delivery timing is an estimate.
・Delivery may be delayed due to manufacturing circumstances.

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

karatz_ID:ansatsu_40000328

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