Sony Music Entertainment Inc. (headquartered in Chiyoda-ku, Tokyo; President and CEO: Atsuhiko Iwakami) announces that its virtual talent development and management project 'VEE' has collaborated with Ibarayugi's murder mystery work 'Forbidden Score Harmony'. The VEE talents 'Amao Uparu' and 'Maou Tulsi' have contributed a collaborative song and made a cameo appearance as character models.
The latest work by murder mystery writer Ibarayugi, 'Forbidden Score Harmony', was released on July 15, 2026. The work features a collaborative appearance by two VEE talents: 'Amao Uparu' and 'Maou Tulsi'.
Both talents performed the original collaboration song 'Soul Unbound', written specifically for this project. Two versions of the song were produced: 'Amao Uparu ver.' and 'Maou Tulsi ver.', each showcasing the unique characteristics of the respective talent.
Additionally, they made a cameo appearance as character models within the story, achieving a genre-crossing collaboration where VEE talents seamlessly integrate into the work's world through both music and narrative.
Work Information
'Forbidden Score Harmony'
Production: Ibarayugi
BOOTH Sales Page: https://ibarayugi.booth.pm/items/8568169
Collaboration Song Information
This song, created in collaboration with 'Forbidden Score Harmony', can be enjoyed as standalone music. Furthermore, by purchasing the digital download, it can also be used as an insert song within the murder mystery game.
We encourage you to purchase the work and fully enjoy its world.
Amao Uparu - 'Soul Unbound'
Music Video:
Song URL: https://orcd.co/uparu_soulunbound
Song Credits
'Soul Unbound'
Lyrics, Composition, Arrangement: Atsuhito Sato
Vocal: Amao Uparu
Guitar: Atsuhito Sato
Bass: Ren Morimoto
All Other Instruments and Programming: Atsuhito Sato
Mix: Shuji Minamimae
Recording Engineer: Kaori Ishikawa
Visual Credits
Jacket Design: Yasumbrella Ichii
Music Video: Chariki
Maou Tulsi - 'Soul Unbound'
Music Video:
Song URL: https://orcd.co/tulsi_soulunbound
Song Credits
'Soul Unbound'
Lyrics, Composition, Arrangement: Atsuhito Sato
Vocal: Maou Tulsi
Guitar: Atsuhito Sato
Bass: Ren Morimoto
All Other Instruments and Programming: Atsuhito Sato
Mix: Shuji Minamimae
Recording Engineer: Kaori Ishikawa
Visual Credits
Jacket Design: Yasumbrella Ichii
Music Video: Chariki
Comment from Atsuhito Sato on the song:
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This is a song expressing the will to keep singing, even in a world where music is forbidden.
I aimed to create a rock track that matches a decadent worldview, rising up from a state of emotional brokenness.
'Soul Unbound' carries the meaning of Soul = soul, Unbound = set free, expressing the inner conflicts that everyone holds—conflicts that resonate with both the world of 'Harmonia' and our own.
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What is a Murder Mystery?
A murder mystery is an experiential deduction game where participants take on the roles of characters in a story, aiming to solve the truth behind an incident while pursuing their own objectives.
Each player is given a secret role, and the story unfolds through conversation and information exchange. The game offers a unique, one-time-only 'once-in-a-lifetime' experience and has recently gained significant popularity in Japan.
Amao Uparu
'Amao Uparu' Profile
Until a few years ago, Uparu lived an ordinary life, but one day gained the ability to enter the virtual world.
Apparently, Uparu is now streaming with 'Nayomori-sensei', who claims to have come from the future to fight against '20XX'—but what is the real truth...?
—— Message from Nayomori-sensei (Uparu's partner) ——
I'm Nayomori-sensei! I've come to Uparu's side to fight against '20XX'!
Uparu is usually quiet, but talks a lot during streams! Please give Uparu lots of love!
・X: https://x.com/UPARU_JP
・YouTube: https://www.youtube.com/@AnewUparu
Maou Tulsi
'Maou Tulsi' Profile
Full name: Tulsi Nightmare Madness IV.
Although he denies it, he is 100,021 years old.
His dream is to build a ridiculously huge demon king's castle in Harajuku.
He claims he used to have a great physique and was strong, but after sleeping for tens of thousands of years, he lacks magical power. He's concerned about his underdeveloped body (though he won't say where) and knows he needs overwhelming magic power to grow bigger.
Having heard on the Makai (Demon World) internet that human otaku are easy targets, he came to collect magical power—but they turned out not to be so easy after all.
・X Account: https://x.com/IDmadeMiruna
・YouTube: https://www.youtube.com/@Tulsi_Nightmare
Ibarayugi (NAGAKUTSU)
Ibarayugi (NAGAKUTSU) Profile
Began creating murder mystery works in 2019. Has released numerous works enjoyable by both beginners and advanced players, and has created over 60 murder mystery titles to date. Based in Osaka and involved with the murder mystery specialty store 'NAGAKUTSU'.
・X Account: https://x.com/ibarayugi
・BOOTH: https://ibarayugi.booth.pm/
・Murder Mystery Specialty Store NAGAKUTSU: https://www.nagakutsu.com/
Overview of the 'VEE' Project
VEE: Logo
A virtual talent development and management project by Sony Music, the largest of its kind in history.
Through this project, VEE supports virtual talents in realizing their dreams—not only through streaming and video production, but also in music, voice acting, and creative activities. Leveraging the extensive know-how and solutions from the Sony Music Group, which has long operated in diverse entertainment fields, the project fully supports each virtual talent's activities.
・Official Website: https://vee-official.jp/
・Official YouTube: https://www.youtube.com/@VEE_official
・Official X: https://x.com/_vee_official_
※The content of this press release is based on information available at the time of publication and is subject to change without prior notice.
FACT BOX
- Source: PR TIMES
- Category: Partnership
- Products / services: VEE