Koseki Bijou has dropped the full version of CORE//UNBREAKABLE, an original song recorded for hololive Dreams (ホロライブドリームス) — and it’s exactly the kind of track you want carrying a project’s theme. Bold, driving, and built around a title that says everything about its spirit: unbreakable, no asterisks.
CORE//UNBREAKABLE Is Built Like Its Title
From the first seconds, CORE//UNBREAKABLE plays like an anthem with something to prove. The production leans into a punchy, guitar-forward rock sound that gives Bijou plenty of room to push her voice, and the full version finally lets the arrangement stretch past the teaser lengths fans have been looping since the project’s promotion started. Short versions are fine. A full song you can actually sink into? That’s where a track like this earns replay value.
Koseki Bijou’s Vocal Performance Steals the Show
Bijou (of hololive English -Justice-) has always had one of the most distinctive voices in the branch — a slightly raspy, rock-ready tone that doesn’t get to shine in every context. Here it’s front and center, and the songwriting clearly accounts for it: the phrasing sits right in the pocket of where her voice sounds most confident. When a song is written for a specific singer rather than the other way around, you can hear it. This is one of those cases.
The Production Team Behind the Song
The entire track — lyrics, composition, and arrangement — is credited to 太嘉志・猟平 (Takashi · Ryohei), a single duo handling every layer of the song. That kind of unified vision shows: nothing in the arrangement fights the vocal, and the song’s momentum never stalls across its runtime. It’s tight, purposeful writing, which is exactly what you want from a flagship original for a project like hololive Dreams.
What This Means for Hololive Dreams
hololive Dreams is a game project from hololive production, and the song’s release doubles as the project’s musical centerpiece — the video description points straight to the game’s official download page. Having an artist of Bijou’s caliber sing the theme isn’t just a flex; it gives the project an identity you can hum. As the game rolls out, CORE//UNBREAKABLE is the song players will associate with every match, every stream, and every highlight clip. That’s a good position for a song to be in.
The full version is up now on the official hololive Dreams channel, and with early numbers already strong — nearly 20,000 views and a like ratio well above 15% in the first day — it’s clear fans came for this one.
Track Credits
- Title: CORE//UNBREAKABLE (Full ver.)
- Vocals: Koseki Bijou
- Lyrics: 太嘉志・猟平 (Takashi · Ryohei)
- Composition & Arrangement: 太嘉志・猟平 (Takashi · Ryohei)
- Project: hololive Dreams (ホロライブドリームス)
- Released: October 25, 2026
▶ Watch: Koseki Bijou — CORE//UNBREAKABLE (Full ver.) on YouTube
