Otobe Sapphire

🛠

This subject is work in progress. What is being worked on: Appearance and Personality Please bear with us while improvements are being made and assume good faith until the edits are complete. For information on how to help, see the guidelines. More subjects categorized here.

🛠

Otobe Sapphire VOCALOID6 | Songs Albums Notable Originals

---

Otobe Sapphire
General information
Sex	Female
Voice	Yun*chi
Product information
Company	Studio ENTRE Inc. GEMVOX
Release	November 4, 2025
Base Language	Japanese
Illustrator	Yoshihiko Fujimori
Type	VOCALOID6
Affiliation	Yamaha Corporation
Website	https://gemvox.ai/sapphire

Otobe Sapphire (乙辺サファイア) is a Japanese vocalist developed and distributed by GEMVOX, a sub-division of Studio ENTRE Inc., and was released for the VOCALOID6 engine in November 2025.

Her voice provider is Japanese singer Yun*chi, who also provided the voice for Sapphire's younger sister Otobe Hisui for the VoiSona engine.

Concept

“A songstress whose crystal-clear voice resonates across the world. Her light singing voice, like the wind crossing the blue sky, kindles a blue light within the hearts of those who hear it.”
—Character introduction

Sapphire is a girl born and raised by the sea. While singing along to the rhythm of the ocean's roaring waves, she discovered she possessed the power to connect sound and heart. Her crystal-clear voice is said to evaporate tears and awaken dormant feelings. She herself pays no mind to such things, simply smiling and saying, "The sky is so blue and beautiful today, isn't it?" She is the older sister of Otobe Hisui.

Cherishing the memory of her sister who once sang with her, Sapphire continues to sing, hoping her voice reaches beyond the distant sky. She is a presence that holds a deep blue within her brightness.

Her favorite things are "the sea at sunrise" and "the foam at the water's edge." Her dream is to dye the world a gentle blue with her song.

In the web novel SAMURAI Cryptos: Resonance of Silence, Sapphire is conceived as a student at Kamui Academy (神威学園; Kamui Gakuen), one of various schools for training people into "Composers" (神子(コンポーザー)). Composers are individuals who, to protect humanity, master the power of song and music to fight terrible extradimensional monsters called "Dissonance Beasts" (不協和音(ディソナンス)ノ獣; Disonansu no Kedamono), who seek to ruin the human world by expanding dimensional rifts dubbed the "Prelude of Evil" (魔ノ前奏曲(プレリュード); Akuma no Preryūdo) which upon contact can vanish people into another dimension. Sapphire is described as an underachieving failure as a Composer, in spite of being the daughter of an exceptionally skilled Composer.

Etymology

The kanji "Oto" (乙) can mean "the latter", "duplicate", "strange", or "witty"; it is also an archaic term used as a prefix for "young(er/est)". The kanji "Be" (辺) can mean "environs", "boundary", "border", or "vicinity"; in archaic or poetical contexts it can also mean "surrounding area", "seashore", "seaside", or "coast" (the latter three meanings being references to her concept design explained earlier above) and is sometimes used as a suffix to roughly indicate location. Put together, "Otobe" (乙辺), which is a known family name or surname, can possibly mean "young environment", but in this special context (given her concept) it could also alternatively mean "young seashore".

As with all GEMVOX vocals, her given name is based upon that of a gemstone, hers being "Sapphire" (a blue gemstone, blue being her symbol color), written in katakana as "サファイア". Her name is written in Japanese styling, similar to vocalists like Hatsune Miku (初音ミク).

Appearance

INFORMATION PENDING.

Otobe Sapphire was illustrated by manga author Yoshihiko Fujimori, who also provided illustrations to the web novel SAMURAI Cryptos: Resonance of Silence where Sapphire plays a deuteragonic role.

Personality

INFORMATION PENDING.

Relations

• Otobe Hisui - Younger sister and fellow GEMVOX vocal for VoiSona with the same voice provider.
• Shimon Topaz - Fellow GEMVOX vocal for Synthesizer V Studio (and later Synthesizer V Studio 2).
• Shiraki Jasper - Fellow GEMVOX vocal for VoiSona.

History

Marketing

A web novel titled SAMURAI Cryptos: Resonance of Silence (サムライクリプトス～静寂のレゾナンス～) was first published on October 31, 2025 on the TellerNovel (テラーノベル) digital platform as a collaboration with GONZO K.K., the animation studio that collaborated with Studio ENTRE Inc. in the creation of the GEMVOX project. The novel was written by Kujūku Kaname (要九十九) and illustrated by Yoshihiko Fujimori. Otobe Sapphire was featured in the promotional poster and banner for the novel; in the novel, Sapphire is portrayed as an underachieving Composer who joins forces with the main protagonist, an equally-underperforming high-school student named Ichinose Eito (一野瀬詠心), to combat the Dissonance Beasts in spite of their terrible academic shortcomings.

Voicebanks

Otobe Sapphire

A Japanese AI vocal based on the singing style of Yun*chi.

• Otobe Sapphire (VOCALOID6), November 4, 2025

Music featuring Sapphire

• On this wiki, Otobe Sapphire is featured in 1 songs and 0 albums.

• There are listings for notable and original songs.

Search for music featuring Otobe Sapphire [show/hide]

• "VOCALOID Otobe Sapphire" on Niconico Video
• "VOCALOID Otobe Sapphire" on YouTube
• "VOCALOID Otobe Sapphire" on bilibili
• "VOCALOID Otobe Sapphire" on SoundCloud
• "VOCALOID 乙辺サファイア" on Niconico Video
• "VOCALOID 乙辺サファイア" on YouTube
• "VOCALOID 乙辺サファイア" on bilibili
• "VOCALOID 乙辺サファイア" on SoundCloud

Reputation

Status

Google Trends

Otobe+Sapphire,乙辺サファイア

Trivia

First VOCALOID from Studio ENTRE Inc. First female VOCALOID from Studio ENTRE Inc.

External links

Language	Description	Site
Japanese	GEMVOX official character profile	Link
Japanese	GEMVOX character guidelines	Link
English	deviantArt, art and media community	Link
Japanese	Pixiv, art and media community	Link
English	VocaDB, artist database entry	Link