“Poker Chase,” the battle-royale-style Texas Hold’em poker game operated by Skyfall Co., Ltd., will hold its first collaboration event with Hololive VTuber Hakui Koyori from September 29 (Tue) through October 21 (Wed), 2026. The event adds four playable characters and introduces the title’s first-ever union event.

Three Versions of Hakui Koyori Plus AI Koyori Join as Playable Characters

In the collaboration’s limited-time pickup slot, four characters appear as playable characters: Hakui Koyori [Ko], Hakui Koyori [Yo], Hakui Koyori [Ri], and AI Koyori. The slot also offers collaboration-themed tables, playing cards, chips, and other decorative items based on each character.

Hakui Koyori is portrayed as a researcher for the “Secret Society holoX,” self-proclaimed as “the brain of holoX.” She’s active on her YouTube channel and X. The collaboration’s atmosphere can also be seen in the promotional video.

Three Factions Compete in the Title’s First-Ever Union Event

The highlight of this event is Poker Chase’s first-ever union event. Players are split into three unions — [Ko], [Yo], and [Ri] — and compete by earning collaboration points called “Koyorinium.” Three types of rewards are available: rewards for all players based on union ranking, rewards based on individual cumulative totals, and rewards based on individual ranking within each union.

Koyorinium can be earned through ranked matches, tournaments, club matches, ring-match weekly missions, and more, with a score bonus of 50% for owning one collaboration character and up to 200% for owning all four. Note that union selection has a deadline, after which a union is assigned automatically.

Login Bonuses and a Commemorative Tournament Also Underway

A 7-day cumulative login bonus also runs during the event, offering the collaboration home background “Laboratory,” Koyorinium, tournament tickets, and more. From September 29 (Tue) through October 20 (Tue), a commemorative tournament will also be held, with the top 10 players receiving the all-in effect “Freezing” and the collaboration background “KOYO LABO.” Alongside the standard format, a “DEEP” format lasting up to roughly 4 hours — where skill tends to matter more — is also available.

Poker Chase has previously run other collaborations as well, including a rerun collaboration with Nanashi Inc.

Follow & Repost Campaign Open Ahead of the Collaboration

Ahead of the collaboration’s launch, a follow-and-repost campaign is running on the official Poker Chase X account from September 23 (Wed) 6:00 PM to September 28 (Mon) 11:59 PM. Entry is completed by following the official account and posting with the hashtag “#PokaChe Hakui Koyori Collab,” or by quote-reposting the official post. Four winners will be chosen by lottery to receive the collaboration characters as playable characters.

Editor’s Take

Splitting a single VTuber into three characters — “Ko,” “Yo,” and “Ri” — and then adding “AI Koyori” on top is a bold design that translates fans’ preference for a particular side of their favorite talent directly into the game’s faction selection. The union event should generate the kind of excitement that comes from fans cheering on their favorite side, making this an easy collaboration to talk about for both VTubers who stream poker and their viewers. Depending on how this one is received, the union format could become a staple in future collaborations too.

Source: PR TIMES