[Available until Wednesday, 9/30] "Assassination Classroom" x KARATZ Collaboration: Koro-sensei Model Necklace

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

Click here for the special page


【Features of the collaboration jewelry】
・Made using high-quality gemstones carefully selected by expert gem buyers.
・Uses SV925 with gold plating to maintain a beautiful appearance for a long time.
・Each piece is carefully crafted by skilled domestic artisans.

Sales period: Until Wednesday, September 30, 2026
※Sales may end or be temporarily suspended once the available quantity is reached.

Estimated delivery date:
Scheduled for delivery around late October 2026
※As this is a made-to-order item, the date may shift 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 Specs】

【Care Instructions】
・Gently wipe off sweat and dirt with a soft cloth. If necessary, wash lightly with water or lukewarm water and dry thoroughly.
・When using a microfiber cloth, be careful, as any hard debris or sand attached to the cloth may cause scratches.
・Avoid using cloths containing abrasives, silver-specific cleaners, or cleaning solutions, as they may cause the plating to peel off.

【Notes】
・All images are for illustrative purposes only.
・All sizes are approximate and may vary slightly.
・Due to the nature of natural stones, there may be differences in color compared to the sample. Please be assured that we inspect each gemstone individually so as not to compromise the quality of the product.

■ Regarding scheduled shipping dates
・The delivery period is an estimate only.
・Due to manufacturing circumstances, the delivery period may fluctuate.

■ 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 (Pay Later) / Alipay / AlipayHK / WeChat Pay

karatz_ID:ansatsu_40000328

©Yusei Matsui/SHUEISHA, Assassination Classroom Committee 2025