Nakuru (Synthesizer V Studio 2)

Nakuru	SynthV Studio 2	|	Originals	|	Gallery

Nakuru (Synthesizer V Studio 2)
Product Information
Company	Hifumi,inc.
Release Date(s)	April 27, 2025
Status	Released
System Requirements	Windows, MacOS
Base Language(s)	Japanese
Type	Synthesizer V Studio 2 (with version compatible with Synthesizer V Studio)
Licensing	Proprietary
Affiliations	Dreamtonics Co., Ltd.
Product Page	Digital copies: DLsite (Standalone) DLsite (Starter Pack) Physical copies: BOOTH (Standalone) BOOTH (Standalone w/Bonus CD) BOOTH (Starter Pack w/Bonus CD)

This article is about the Synthesizer V Studio 2 software known as a voice database. If you are looking for the Synthesizer V character then click here.

History

On March 1, 2025, two characters were introduced under the names Nakuru and Natsume Itsuki by the Japanese content production company Hifumi,inc. based on the voices of the Japanese virtual singers Nakuru Aitsuki and Itsuki Natsume respectively, and were announced to be in development for the then-upcoming Synthesizer V Studio 2. Nakuru was announced to be illustrated by Japanese illustrator Nekoyama Iori. An official website was opened for the pair and more Information was announced to be released in the future. The release date at the time was undecided. On March 3, a press release with PR TIMES released additional information including concept artwork, the full illustrations for both characters and a brief description for each vocalist. Nakuru was described as a singing voice database that allows for a crystal clear singing voice and a wide range of expression, including whisper and mellow to pop, with a variety of vocal tones suitable for all genres. A short sample demonstration showcasing Nakuru's vocals was uploaded by producer America Minyo Kenkyukai (アメリカ民謡研究会) on their official YouTube channel.

On March 20, the day before Synthesizer V Studio 2 was released, the boxart package illustrations for Nakuru and Itsuki were revealed; it was also announced that both physical and digital editions (including both standalone and Starter Pack options) would be released on April 27. Pre-orders were opened the same day and would be available until April 7. Users who opt for the physical packaged edition, have the option of purchasing a version including an additional bonus CD containing original songs by Yoshida Yasei and necchi. That same day, Nakuru's first demo song was uploaded, a cover of Evil Bubble originally sung by her Voice Provider.

Voice Database Information

Demonstrations

Demonstrations
何も知らないまま。(Nani mo shiranai mama.)	YouTube
Evil Bubble	YouTube
時の来ることは無い。 (Toki no Kiru koto wa nai.)	YouTube
Beautiful World	YouTube
愛の残滓 (Ai no Zanshi)	YouTube
良いNPCはすぐ死ぬの歌 (Yoi NPC wa Sugu Shinu no Uta)	YouTube
UNDEAD (ft. Nakuru Aitsuki)	YouTube
Shapeless	YouTube
オニノコ (Oni no Ko)	YouTube

Voice Databases

• SV AI
• SV2 AI

Product Information

Optimum

  Genre: Whisper, mellow, pop

Versions

  Lite Version/FLT Available?: No  Starter Pack Available?: No  Web Version Available?: No

Package details as noted:

Nakuru is a feminine Japanese voice database based on the voice of utaite Nakuru Aitsuki. As expected of an AI voice database, this enables her to sound realistic and human-like.

Vocal traits as noted:

Nakuru is able to sing more realistically through changes in volume and breath, further enriching singing details, making each singing unique, and providing creators with more options. Through this mode, she can use AI Retakes to create multiple "takes" of a sung section to find an ideal vocal without the need for "laborious tuning". This feature is only available in the Synthesizer V Studio Pro Editor.

Phonetic notes as noted:

• Phoneme format: Romaji
• Through Cross-lingual Singing Synthesis, Nakuru can sing in not only Japanese but also in English, Mandarin Chinese, Cantonese Chinese, and Spanish. This feature is only available in the Synthesizer V Studio Pro Editor.

Vocal Modes as noted (Synthesizer V Studio Pro Editor only):

Nakuru comes with six variations within the Vocal Mode function:

• "Emotional" - A clear and emotional voice.
• "Mellow" - A calm and soft voice.
• "Pop" - A bright and bouncy voice.
• "Power" - A cool and aggressive voice.
• "Vivid" - A devilish voice with a peculiar quality.
• "Whisper" - A whispering voice with a childish quality.

System requirements as noted:

Software Requirements:

• Operating System:
  • Windows 11/10 or higher (64-bit only)
  • Mac OS X: 10.13 or higher
  • Linux Ubuntu 20.4 or higher (64-bit only)

Hardware Requirements:

• CPU: Intel Core i5 or higher (or equivalent AMD CPUs) recommended
  • For high-quality editing of AI audio: Intel Core series 4th generation i5 (i5-4xxx) or higher is recommended, or AMD Athlon X4 845 or higher, including Ryzen series.
• RAM: 2GB or higher
• Disk Space: 1 GB or higher (for installing one voice database)
  • The amount of space required depends on the number of voice databases installed.
• Display: 1280 x 800 or higher

Other:

• Sound card
• Internet connection is necessary for activation and obtaining updates.

License agreements as noted:

• Hifumi,Inc Guidelines - Japanese

Voice database sample

• Nakuru Solfège:
  
  • Vocal Mode Solfèges (100%):
    • "Emotional":
      
    • "Mellow":
      
    • "Pop":
      
    • "Power":
      
    • "Vivid":
      
    • "Whisper":
      

Product Information

Optimum

  Genre: Whisper, mellow, pop

Versions

  Trial Version Available?: Yes  Starter Pack Available?: Yes

Package details as noted:

Nakuru is a feminine Japanese voice database based on the voice of utaite Nakuru Aitsuki. As an AI vocal, this enables her to sound realistic and human-like.

Vocal traits as noted:

Nakuru is able to sing more realistically through changes in volume and breath, further enriching singing details, making each singing unique, and providing creators with more options. Through this mode, she can use AI Retakes to create multiple "takes" of a sung section to find an ideal vocal without the need for "laborious tuning". This feature is only available in the Synthesizer V Studio 2 Pro Editor.

Phonetic notes as noted:

• Phoneme format: Romaji
• Through Cross-lingual Singing Synthesis, Nakuru can sing in not only Japanese but also in English, Mandarin Chinese, Cantonese Chinese, Spanish, and Korean. This feature is only available in the Synthesizer V Studio 2 Pro Editor.

Vocal Modes as noted (Synthesizer V Studio 2 Pro Editor only):

Nakuru comes with six variations within the Vocal Mode function:

• "Emotional" - A clear and emotional voice.
• "Mellow" - A calm and soft voice.
• "Pop" - A bright and bouncy voice.
• "Power" - A cool and aggressive voice.
• "Vivid" - A devilish voice with a peculiar quality.
• "Whisper" - A whispering voice with a childish quality.

System requirements as noted:

Software Requirements:

• Operating System:
  • Windows 11/10 or higher (64-bit only)
  • macOS 11 or higher

Hardware Requirements:

• CPU: Intel Core i5 (4th generation) or higher; AMD Ryzen; Apple Silicon M1 or higher.
• RAM: 4GB or higher
• Disk Space: 1 GB or higher (for installing one voice database)
  • The amount of space required depends on the number of voice databases installed.

Other:

• Sound card
• Internet connection is necessary for activation and obtaining updates.
• An email address able to send and receive messages is required. (You need to create an account at Dreamtonics to use the product.)

License agreements as noted:

• Hifumi,Inc Guidelines - Japanese

Voice database sample

• Nakuru Solfège:
  
  • Vocal Mode Solfèges (150%):
    • "Emotional":
      
    • "Mellow":
      
    • "Pop":
      
    • "Power":
      
    • "Vivid":
      
    • "Whisper":