Poker Chase has officially announced its first collaboration with Hakui Koyori, the hololive VTuber and Secret Society holoX member. The event begins after maintenance on September 29, 2026 and runs until October 21 at 11:59 AM JST.
Instead of adding a single Koyori avatar, the collaboration introduces Hakui Koyori [Ko], Hakui Koyori [Yo], Hakui Koyori [Ri], and AI Koyori as playable collaboration characters with newly recorded voices. The event also marks the debut of Poker Chase's Union Event system, dividing players into three groups that compete by collecting the collaboration score known as Koyorinium.
Quick Summary
- Game: Poker Chase
- Japanese title: ポーカーチェイス
- Collaboration: Poker Chase × Hakui Koyori
- Collaborator: Hakui Koyori / 博衣こより
- Agency: hololive production
- Group: hololive
- Unit: Secret Society holoX
- Collaboration type: in-game collaboration event
- Status: officially announced
- Announcement date: September 23, 2026
- Main announcement time: 6:00 PM JST
- Start date: September 29, 2026
- Start: after maintenance
- End date: October 21, 2026
- End time: 11:59 AM JST
- Duration: approximately three weeks
- Playable character 1: Hakui Koyori [Ko]
- Playable character 2: Hakui Koyori [Yo]
- Playable character 3: Hakui Koyori [Ri]
- Playable character 4: AI Koyori
- Total collaboration characters: 4
- Voices: newly recorded for the collaboration
- Illustration design: Yuhei Murota
- Collaboration PV: available
- PV format: prerecorded / non-live
- Pickup: collaboration limited pickup slot
- New event: Union Event
- Union Event status: first for Poker Chase
- Union: [Ko]
- Union: [Yo]
- Union: [Ri]
- Collaboration score: Koyorinium
- 1-character bonus: +50%
- 2-character bonus: +110%
- 3-character bonus: +180%
- 4-character bonus: +200%
- Login bonus: up to 7 days
- Tournament: available
- Tournament period: September 29–October 20, 2026
- Tournament formats: Normal and DEEP
- DEEP: structure can run for roughly four hours
- X campaign: available
- X campaign period: September 23 at 6:00 PM–September 28 at 11:59 AM JST
- X campaign prizes: four collaboration playable characters
- Winners: four total, one character for each selected winner
- Poker Chase genre: battle royale-style Texas Hold'em poker
- Platforms: iOS
- Platforms: Android
- Platforms: PC browser
- Business model: free-to-play / optional purchases
- Operator / developer: Skyfall Inc.
Hakui Koyori Collaboration PV and Poker Chase
Three Koyori Variants and AI Koyori Join the Poker Table
The most immediately unusual part of the collaboration is that Hakui Koyori is not represented by just one character.
Poker Chase splits her into Hakui Koyori [Ko], Hakui Koyori [Yo], and Hakui Koyori [Ri], then adds AI Koyori as a fourth playable collaboration character.
All four are part of the collaboration limited pickup slot. Poker Chase's official account also confirms that the collaboration characters use newly recorded voice material created specifically for the event.
The collaboration illustration design is handled by Yuhei Murota, who also acknowledged his work on the project following the reveal.
The [Ko], [Yo], and [Ri] naming concept is not limited to visual presentation. Those three names also form the basis of the Union Event, directly connecting the character concept with the event's progression system.
Poker Chase's First Union Event Splits Players Into Three Groups
The Hakui Koyori collaboration also introduces the game's first Union Event.
Players choose between [Ko] Union, [Yo] Union, and [Ri] Union, with each side competing by collecting the collaboration score known as Koyorinium.
Koyorinium can be earned through Ranked Matches, tournaments, Club Matches, Ring Game weekly missions, and the limited login bonus.
Rewards are divided into three categories. Union rewards are distributed to members based on the final Union ranking, cumulative personal rewards unlock as an individual player's score rises, and individual ranking rewards depend on a player's final position within their chosen Union.
Scores earned before selecting a Union are still counted internally and will be reflected once the player joins a group.
Union selection does have a deadline, however. Players who do not choose before that point will be assigned automatically.
Owning All Four Characters Raises Koyorinium Gains by 200 Percent
Collaboration characters directly influence Union Event progression.
Owning one of the four collaboration characters provides a 50% score bonus. Two characters increase that to 110%, while three raise the bonus to 180%.
Players who own all four—Hakui Koyori [Ko], [Yo], [Ri], and AI Koyori—receive the maximum 200% Koyorinium bonus.
That connects the character pickup system directly to event progression rather than leaving the characters as purely cosmetic poker-table avatars.
Detailed probability information for the limited pickup slot has not been published in the press release and is instead directed to the in-game information once the event begins.
Seven-Day Login Bonus Includes a Laboratory Background and Koyorinium
Poker Chase is also offering a cumulative seven-day login bonus throughout the collaboration period.
Day one grants the collaboration home background [Laboratory], fitting Hakui Koyori's identity as a holoX researcher.
Day two provides Koyorinium ×200, day three provides Money ×2,000, and day four awards another Koyorinium ×200.
Day five gives Tournament Tickets ×2, day six adds another Koyorinium ×200, and day seven concludes with a Slot Ticket ×1.
Players who log in on September 29 before maintenance will begin receiving the collaboration login bonus from September 30.
Collaboration Tournaments Use Normal and DEEP Structures
The tournament portion runs from September 29 through October 20, 2026, ending one day before the overall collaboration.
Two tournament structures are offered: Normal and DEEP.
Poker Chase describes DEEP tournaments as structures that can last for approximately four hours, allowing poker skill to have a stronger influence than in shorter conventional formats.
Top-10 finishers can earn the All-in Effect [Frozen] and collaboration background KOYO LABO.
Top-50 players can receive collaboration chips, playing cards, and a table using the KOYO LABO design, while additional Koyorinium is awarded according to ranking and tournament participation.
Tournaments are scheduled every day during the event period, with additional sessions on Saturdays and Sundays.
The X Campaign Can Award the Playable Characters Directly
Before the full collaboration begins, Poker Chase is running a promotional campaign on X.
The campaign lasts from September 23, 2026 at 6:00 PM until September 28 at 11:59 AM JST.
Users need to follow @PokerChase_JP and participate through the designated campaign post, which uses the hashtag #ポカチェ博衣こよりコラボ.
Four winners will be selected, with each receiving one of the four Hakui Koyori collaboration playable characters inside Poker Chase.
The promotional campaign therefore ends one day before the main collaboration begins after maintenance on September 29.
Why This Matters
1) Koyori is literally divided into three playable variants
The [Ko], [Yo], and [Ri] concept goes beyond a visual joke, becoming both separate playable characters and the names of the event's three Unions.
2) AI Koyori becomes the fourth character
Poker Chase expands the concept beyond the three pieces of Koyori's name by adding AI Koyori as a separate playable character.
3) The collaboration introduces the Union Event system
This is not merely another collaboration using an existing format. Skyfall identifies the event as Poker Chase's first Union Event.
4) Character collecting directly affects event progression
The number of collaboration characters owned increases Koyorinium gains, scaling all the way up to a 200% bonus.
Game and Collaboration Information
For now, the additional important information currently known includes:
- Poker Chase is operated by Skyfall Inc.
- the game uses Texas Hold'em poker
- each player receives two hole cards
- five community cards are placed on the table
- players construct the best five-card hand from the seven available cards
- a player is eliminated when their chips are depleted
- rankings are determined by elimination order
- the goal is to become the final remaining player with chips
- Poker Chase describes its format as battle royale-style poker
- this is the first collaboration between Poker Chase and Hakui Koyori
- the main announcement was published on September 23, 2026
- the collaboration begins after maintenance on September 29
- it ends on October 21 at 11:59 AM JST
- four collaboration characters appear in the limited pickup slot
- they are Hakui Koyori [Ko], [Yo], [Ri], and AI Koyori
- the character voices were newly recorded for the collaboration
- illustration design is handled by Yuhei Murota
- the collaboration introduces the first Union Event
- the available groups are [Ko], [Yo], and [Ri]
- the event score is called Koyorinium
- Ranked Matches award Koyorinium
- tournaments award Koyorinium
- Club Matches award Koyorinium
- Ring Game weekly missions award Koyorinium
- the limited login bonus also awards Koyorinium
- one collaboration character provides a 50% score bonus
- two provide 110%
- three provide 180%
- all four provide 200%
- the login bonus runs for up to seven cumulative days
- login days 2, 4, and 6 provide a combined 600 Koyorinium
- collaboration tournaments run through October 20
- Normal and DEEP are the two tournament structures
- DEEP tournaments can last approximately four hours
- top-10 players can earn the All-in Effect [Frozen] and KOYO LABO background
- top-50 players can earn KOYO LABO chips, playing cards, and table cosmetics
- tournament rewards can vary depending on participant numbers
- the X campaign begins September 23 at 6:00 PM JST
- the X campaign ends September 28 at 11:59 AM JST
- four winners will receive collaboration characters
- Hakui Koyori is a hololive VTuber
- she is the researcher of Secret Society holoX
- Poker Chase is available on iOS, Android, and PC browsers
- the game is free-to-play with optional purchases
- official information is available through the Poker Chase Official Website
- the main announcement is available through the Poker Chase Official X Post
- the collaboration video is available through the Poker Chase x Hakui Koyori Official PV
- the press release is available through the Skyfall Official Announcement
- tournament details are available through Poker Chase Official Tournament Information
- the Android version is available through Poker Chase on Google Play
- the iOS version is available through Poker Chase on App Store
- Hakui Koyori's official profile is available through the hololive Official Profile
Closing
Poker Chase and Hakui Koyori are building a full event around three pieces of Koyori's name and AI Koyori rather than simply introducing a single collaboration avatar. All four become playable characters, while [Ko], [Yo], and [Ri] simultaneously serve as the three sides of Poker Chase's first Union Event.
The collaboration runs from September 29 through October 21, 2026. Pickup probabilities and several implementation-specific details remain reserved for the in-game information once the update becomes available.
- Poker Chase Official X — Official Hakui Koyori Collaboration Reveal, Newly Recorded Voices, and Illustration Design
- Skyfall — Official Hakui Koyori Collaboration Dates, Characters, Union Event, Login Bonus, Tournament, and Campaign Details
- Poker Chase / YouTube — Official Hakui Koyori Collaboration Promotional Video
- Poker Chase — Official Hakui Koyori Collaboration Tournament Schedule and Format Details
- Google Play — Official Poker Chase Android Store Page
- App Store — Official Poker Chase iOS Store Page
- hololive production — Official Hakui Koyori Talent Profile
- Gamer — September 23, 2026 Report on the Poker Chase and Hakui Koyori Collaboration
