Pearl in Blue Casts Hiyori Nitta as Yotsuba, the Shy Youngest Member of Dark Night

Pearl in Blue has officially announced Hiyori Nitta (新田ひより) as the Japanese voice of Yotsuba (ヨツバ). The casting announcement was published through the game's official account on September 10, 2026, once again highlighting the youngest Dark Night member with dialogue that emphasizes her easily flustered personality.

Yotsuba had previously been introduced as Dark Night's “cuteness” member. She is extremely shy and withdrawn, to the point of freezing when someone continues looking directly at her. The voice reveal arrives as Netmarble ramps up promotion for Pearl in Blue ahead of its playable Tokyo Game Show 2026 appearance.

Quick Summary

• Game: Pearl in Blue
• Japanese title: パールインブルー
• Character: Yotsuba
• Japanese name: ヨツバ
• Japanese voice actor: Hiyori Nitta
• Japanese name: 新田ひより
• Voice-cast announcement: September 10, 2026
• Announcement type: character voice cast introduction
• Announcing account: Pearl in Blue Official
• Official X: @Pearl_in_Blue
• Yotsuba's group: Dark Night
• Character position: youngest member
• Officially described role: “cuteness” member
• Personality: extremely shy
• Additional trait: withdrawn / introverted
• Reaction to attention: easily flustered and can freeze
• Dark Night member: Ichiha
• Dark Night member: Nika
• Dark Night member: Miho
• Dark Night member: Yotsuba
• Developer: Netmarble N2 Inc.
• Provider / publisher: Netmarble Corp.
• Japanese genre: bishoujo RPG
• Global description: story-driven collectible RPG
• Concept: monthly romantic comedy
• Platform: iOS
• Platform: Android
• Business model: free-to-play with in-app purchases
• Netmarble launch target: 2027
• Specific release date: unannounced
• App Store page: unannounced
• Google Play page: unannounced
• Player role: manager
• Girls managed by the player: those unable to awaken their Pearl
• Term for them: Karappo / 殻っぽ
• Pearl: a power connected to a person's hidden desires
• Pearl Light: the manifestation created when a Pearl blooms
• Knight: someone who wields Pearl Light in battle
• Knights in society: also function as influencers
• Major revealed location: Kenan Island / 剣安島
• Official teaser PV: available
• Teaser PV date: August 14, 2026
• TGS 2026: Pearl in Blue will be exhibited
• TGS 2026 dates: September 17–21, 2026
• TGS location: Makuhari Messe, Chiba
• Playable demo: confirmed
• Current status: still in development

Yotsuba, Official Announcement and Teaser PV

Hiyori Nitta Is Officially the Voice of Yotsuba

The latest announcement directly confirms Hiyori Nitta as Yotsuba's Japanese voice actor.

The official post returns to dialogue already closely associated with the character: Yotsuba panics when she is stared at for too long and struggles to understand what is happening as her nervousness takes over.

That choice of dialogue reinforces the way Pearl in Blue presents her. Yotsuba is not a Dark Night member who thrives on direct attention; she is someone who finds even sustained eye contact overwhelming.

Nitta is represented by Arts Vision. Her official agency profile lists roles including Machikane Fukukitaru in Uma Musume Pretty Derby, Satohama Umika in Blue Archive, and Domyoji Karin in The Idolmaster Cinderella Girls.

The announcement now gives Yotsuba a confirmed Japanese voice identity before players get their first broader opportunity to try the game publicly at TGS.

Yotsuba Is Dark Night's Extremely Shy Youngest Member

Yotsuba did not debut through this casting announcement.

Her earlier character introduction described her as the “cuteness” member and youngest girl in Dark Night.

Her defining personality trait is almost the opposite of the public-facing world surrounding Knights. Yotsuba is extremely shy, tends to withdraw from other people, and can effectively freeze simply from being stared at.

Dark Night currently consists of four introduced members: Ichiha, Nika, Miho and Yotsuba.

Ichiha serves as the energetic leader, Nika is positioned as the ace, Miho is the calm sniper, and Yotsuba fills the role of the group's timid youngest member.

Even the name “Dark Night” is part of the group's comedy. Official lore says the name exists because Ichiha accidentally wrote “Night” instead of “Knight” when submitting the group name.

Being a Knight Means Fighting and Living as an Influencer

Yotsuba's shyness becomes more interesting when placed inside Pearl in Blue's world structure.

A Knight is not merely a fighter. Knights are modern heroes who wield Pearl Light while also operating publicly as influencers.

Official world-building says their work can include streaming, social media, events, advertising and merchandise activities.

The player acts as a manager, meaning the role extends beyond assembling a battle squad. Managers also handle the heroines' public activities while supporting their wishes, problems and personal development.

That creates an obvious tension for Yotsuba: someone who struggles simply with being watched exists inside a profession built partly around visibility and public attention.

Netmarble has not yet detailed exactly how that personality conflict will develop through Yotsuba's personal story or relationship progression.

Pearl and Pearl Light Form the Core of the Setting

The official teaser PV released on August 14 introduces two of Pearl in Blue's most important concepts: Pearl and Knight.

A Pearl is described as the seed of a person's desire. It grows through pain, hardship and adversity experienced by its owner.

When it finally “blooms,” that desire can manifest as a substance known as Pearl Light.

Pearl Light does not have a universal form. Its manifestation depends on what the individual desires and can take the form of a weapon used by a Knight.

Heroines who have not yet managed to bloom their Pearls are called Karappo (殻っぽ). The player, acting as their manager, supports those girls while learning about their wishes and problems.

The teaser PV is also currently the clearest official video material showing the heroines' 3D presentation and Pearl Light becoming part of the game's action.

Monthly Romantic Comedy Defines Its Heroine Relationships

Pearl in Blue is not being marketed simply as an RPG.

Since its initial announcement, Netmarble has used the concept of a “monthly romantic comedy,” built around regularly meeting new heroines and experiencing stories designed to evoke the feeling of being the protagonist of a romantic-comedy anime.

Netmarble's global description calls it a story-driven collectible RPG centered on emotional connections with girls.

The game combines squad-building with 2D anime-inspired cinematic sequences, while its Knights also function as influencers inside the setting.

Game Ad

EA SPORTS FC™ 27

Exactly how the “monthly” structure will work after launch remains unknown—for example, whether every newly introduced heroine will be playable, how story episodes will be divided or how relationship content will unlock.

Because development is ongoing, monetization details beyond the confirmed free-to-play model and in-app purchases also remain limited.

A Playable Demo Is Coming to Tokyo Game Show 2026

Yotsuba's casting announcement arrives only around a week before Tokyo Game Show 2026.

Netmarble has confirmed Pearl in Blue as one of three upcoming games in its lineup alongside Solo Leveling: KARMA and Shangri-La Frontier: The Seven Colossi.

TGS 2026 runs from September 17 through September 21, 2026 at Makuhari Messe in Chiba.

Pearl in Blue visitors will be able to try a playable demo featuring an early portion of the game. Netmarble is also preparing a themed booth and other on-site activities.

The game's dedicated TGS site has announced novelty items including original stickers, clear cards, a memorial film roll, a lenticular card for demo players and a merchandise lottery.

That showcase is significant because much of Pearl in Blue's early rollout has so far taken place through character cards, world-building posts and teaser footage rather than hands-on public access.

Netmarble Targets 2027, but No Specific Release Date Exists Yet

When Pearl in Blue was first announced in July 2026, Japanese consumer-facing material still described its release timing as undecided.

Netmarble's corporate information later narrowed that window.

In its Q2 2026 financial results published on August 5, the company described Pearl in Blue as currently in development with an official launch slated for 2027.

That makes 2027 the latest official launch window given by Netmarble.

No specific date, month or quarter has been announced, however. The Japanese website also does not currently provide a public preorder or preregistration page.

No verified Google Play or App Store product page is available yet either, so this article does not insert an unverified store embed or store link.

Why This Matters

1) Yotsuba now has a confirmed voice identity

Hiyori Nitta gives one of Dark Night's central heroines an identifiable voice ahead of the game's public demo showcase.

2) Yotsuba's personality clashes with the Knight profession

She is deeply shy, while Knights in Pearl in Blue are expected to live partly as public-facing influencers, creating a natural character-development hook.

3) The reveal comes directly ahead of hands-on access

TGS 2026 will provide a much clearer look at how character interaction, squad-building and gameplay fit together.

4) The casting rollout is helping define Dark Night before launch

Netmarble is gradually building the group's identity through profiles, lore, video material and voice announcements ahead of the targeted 2027 release.

Game and Character Information

For now, the additional important information currently known includes:

• the official title is Pearl in Blue
• the Japanese title is パールインブルー
• the game is developed by Netmarble N2 Inc.
• Netmarble Corp. handles its publishing and service
• it is primarily being developed for the Japanese market
• its official Japanese genre is bishoujo RPG
• Netmarble globally describes it as a story-driven collectible RPG
• the game is being developed for iOS and Android
• it will use a free-to-play model
• in-app purchases will be available
• Netmarble targets an official launch in 2027
• no exact launch date has been announced
• no launch month has been announced
• public preregistration has not been announced
• no verified Google Play listing has been announced
• no verified App Store listing has been announced
• Yotsuba is one of the central heroines introduced so far
• her Japanese name is ヨツバ
• Hiyori Nitta is officially Yotsuba's Japanese CV
• the casting announcement was published on September 10, 2026
• Yotsuba belongs to Dark Night
• she is the group's youngest member
• the official introduction describes her as its “cuteness” member
• she is extremely shy
• she tends to withdraw from others
• direct attention can make her panic and freeze
• four Dark Night members have been introduced
• they are Ichiha, Nika, Miho and Yotsuba
• Ichiha is Dark Night's leader
• Nika is introduced as its ace
• Miho is introduced as its calm sniper
• Yotsuba is its youngest member
• the Dark Night name originated from Ichiha mistakenly writing “Dark Knight” as “Dark Night” in official lore
• the player acts as a manager
• managers guide heroines known as Karappo
• Karappo are girls whose Pearls have not yet bloomed
• Pearl is a seed of desire carried within people
• a Pearl grows through pain and adversity
• a blooming Pearl produces Pearl Light
• Pearl Light is a material manifestation of its owner's desire
• Knights use Pearl Light in combat
• Knights also function as public personalities and influencers
• their activities can include streaming
• social-media work is also part of Knight life
• events, advertising and merchandise are additional Knight activities
• the revealed setting includes Kenan Island / 剣安島
• the area is described as a massive entertainment city developed around Knights
• the official teaser PV was released on August 14, 2026
• the teaser introduces Pearl and Knight as core concepts
• it also presents the heroines and Pearl Light through 3D imagery
• Tokyo Game Show 2026 runs September 17–21
• Pearl in Blue will have a playable TGS demo
• the booth also includes themed experiences and novelty items
• Hiyori Nitta is represented by Arts Vision
• her Arts Vision profile lists Machikane Fukukitaru in Uma Musume Pretty Derby
• Satohama Umika in Blue Archive is also listed among her roles
• Domyoji Karin in The Idolmaster Cinderella Girls is among her game credits
• official game information is available through the Pearl in Blue Official Website
• character updates are available through Pearl in Blue Official X
• Yotsuba's casting announcement is available through the Yotsuba Voice Actor Official X Post
• official videos are available through Pearl in Blue Official YouTube
• the main teaser is available through the Pearl in Blue Official Teaser PV
• TGS information is available through the Pearl in Blue TGS 2026 Special Site
• Hiyori Nitta's profile is available through the Arts Vision Official Profile

Closing

Pearl in Blue has now confirmed Hiyori Nitta as Yotsuba's voice, adding another piece of identity to the shy Dark Night member previously introduced primarily through illustrations, dialogue and character profiles. Her social anxiety also creates an interesting contrast with the Knight profession's highly public influencer side.

The game remains in development for iOS and Android with a targeted 2027 launch. A specific date, preregistration and store pages remain unannounced, while the next major opportunity to see it in action will come through its playable Tokyo Game Show 2026 demo on September 17–21.