June 12, 2026 – FESTIVER, a lifestyle brand for fandom, announced today that it is launching an in-person collaboration collection featuring her musical identity in partnership with Mori Calliope from hololive English -Myth-. Releasing a series of tech accessories and collectible goods, this collaboration gives fans the opportunity to incorporate their favorite talent into their daily life with functional fan merchandise. This collaboration is available for purchase from June 12, 2026 on various South Korean sales channels.

 

Product Lineup and Details

This collaboration collection offers a fresh reinterpretation of the musical identity that defines Mori Calliope, the rapper who is Death Herself. It also draws on hololive English official assets, delivering a rich and visually diverse experience designed to resonate with fans of every taste.

Tech Accessories:
・ Phone Case (MagSafe compatible with various iPhone and Android models)
・ Leather Card Wallet (MagSafe compatible)
・ Phone Grip (MagSafe compatible)
・ Earphone Case + Keyring Edition (compatible with AirPods / Galaxy Buds series)

Collectibles & Merchandise:
・ Diorama (Acrylic Stand) — Buildable acrylic stand available in both LD and SD versions
・ Korotto (Acrylic Stand) — Freestanding acrylic stand that showcases a 3D layered effect with background and character
・ Mousepad

 

Sales and Promotional Details

The Mori Calliope x FESTIVER collaboration will be exclusive to South Korean sales channels including the Official FESTIVER Store, Naver Brand Store, Musinsa, and Kakao Gift. Further, FESTIVER is offering various privileges to Dead Beats who purchase the collaboration directly from their online storefront.

■ FESTIVER Promotion Details – Get a special launch discount of 15% for Dead Beats!
・ Promotion Period: June 12 (Fri) – June 28 (Sun), 2026
・ Offer: 15% off all Mori Calliope products
・ Channel: FESTIVER Official Store only (Link)

 

About FESTIVER

FESTIVER is “DOING, DIGGING, FESTIVER” — operating under this slogan, FESTIVER has been building brand recognition through IP collaborations across gaming, sports, music, and more, and continues to grow on the strength of its stylish designs and product quality.

“A fandom lifestyle brand and a beloved artist unite to present a collaboration that fans have been waiting for.”