A Promise of Wizard collaboration is coming to the tapioca drink shop Bull Pulu, with collaboration merchandise going on sale at Bull Pulu locations nationwide and the GK Store online shop starting Friday, September 25, 2026.
This time, the lineup is themed around the wizards dressed in Bull Pulu-colored diner-style outfits, featuring newly drawn mini-character illustrations across can badges, acrylic stands, acrylic keychains, and other goods.
Campaign Overview
Promise of Wizard x Bull Pulu Collaboration Campaign
- Period: September 25 (Fri) to October 18 (Sun), 2026
- Stores: All Bull Pulu locations
- Collaboration page: https://bullpulu.com/mahoyaku-bullpulu/
- Online shop (GK Store): https://www.store-gk.com/
- Online sales period: 12:00 PM on September 25 (Fri) to 11:59 PM on October 25 (Sun), 2026
Please note that purchases made through the online shop are not eligible for the in-store bonus.
Product Lineup
Trading Can Badges [A][B]
- Price: ¥550 (tax included)
- Types: [A] 12 types / [B] 9 types
- Size: approx. 56mm diameter
A complete set is available at the online shop.
Trading Mini Acrylic Stands [A][B]
- Price: ¥990 (tax included)
- Types: [A] 12 types / [B] 9 types
- Size: body approx. W40 x H54mm or smaller / base approx. 38mm
A complete set is available at the online shop.
Trading Wobbling Acrylic Keychains [A][B]
- Price: ¥990 (tax included)
- Types: [A] 12 types / [B] 9 types
- Size: total length within 120mm
A complete set is available at the online shop.
Trading Title Badge Set
- Price: ¥990 (tax included)
- Types: 10 types total
- Size: approx. W80 x H55mm
A complete set is available at the online shop.
Photo-Style Card Collection (2-Card Pack) [A][B]
- Price: ¥770 (tax included)
- Types: [A] 24 types / [B] 18 types
- Size: approx. W54 x H85.6mm
Cards come in a random mix of standard and holographic finishes. A complete set is available at the online shop.
Sticker Set
- Price: ¥1,540 each (tax included); Northern Country design ¥1,925 (tax included)
- Types: 5 types total
- Size: approx. W65 x H65mm
Lunch Tote
- Price: ¥1,980 (tax included)
- Types: 1 type
- Size: approx. W300 x H200 x D100mm
Notes
- Images are for illustration purposes only; actual products may differ.
- Product availability and specifications may be changed, postponed, or canceled due to various circumstances.
- Purchase limits may apply to merchandise and prizes.
- Details are subject to change without notice.
- Campaign content may be changed or canceled depending on circumstances.
- Collaboration goods are only available for purchase by customers who order a collaboration menu item; goods cannot be purchased on their own.
- For full collaboration details, precautions, and eligible stores, please check the official collaboration website.
About Promise of Wizard
"Nice to meet you, Sage. Welcome to this crumbling world."
Promise of Wizard is a game about forming bonds with wizards, in which players guide them to save the world from the Great Calamity. It has surpassed 8 million downloads and received an anime adaptation in January 2025.
What traits the wizards have and how they grow is entirely up to the Sage. The story follows a single Sage summoned to another world and the 21 wizards bound to them, depicting a group portrait of complex, individual characters who, despite their special standing, carry an unending role.
©coly
