Koseki Bijou 3D model comes to Hololive

The sparkling vtuber gem that is Koseki Bijou has a brand new 3D model out, and it matches her brilliance as well as any design could.

Koseki, also known to fans as Biboo, recently celebrated her one-year anniversary with Hololive along with the rest of the Advent crew. Over 600,000 followers later, she’s established a name for herself as a prominent gaming vtuber with streams regularly running for multiple hours. She’s additionally part of several different vtuber groups with other members including Nerissa Ravencroft and Mori Calliope.

Koseki Bijou’s new 3D model launched today, and here’s what’s known about her and her design.

Koseki Bijou’s new 3D model

Koseki Bijou’s 3D look shows her radiance with her homemade crystals, and its release comes with her first original song with other musical vtubers.

Biboo’s stream introduced her old crystalline castle home, though less of it was standing than she remembered. Like Shiori Novella before her, she also passed through a portal, but unlike Shiori, Koseki immediately went into a Dark Souls-esque boss battle and died. Twice. Only by dropping the chandelier on him could she defeat the gimmick boss.

Other major events in the livestream included a duet with fellow vtuber Kaela Kovalski, a pebble-mon doubles battle with Hakos Baelz against Mori Calliope and Tokoyami Towa that ended in a pop rock number called “Inside Identity”, and the introduction of a rabbit named The Grand Executioner of Worlds. At the end, Biboo even promoted her new gem-themed room slippers for sale and closed with a fourth song.

What kind of vtuber is Koseki Bijou?

Koseki Bijou is the sheer embodiment of all human emotions who only grows more kind when exposed to positive people.

Out of all of the members of Advent, Biboo is possibly the strangest. She formed as the crystallization of all forms of human emotion, and greedy humans fought over her mystical brilliance. While the gods decided that she must be imprisoned to prevent humans from fighting, Koseki escaped with the help of Shiori Novella. The newly freed Biboo decided to become a vtuber and prefers to stream long-form content, challenge videos, and more. Ultimately, she would like to appear in a video game and build a millions-strong fanbase.

Something unique to Koseki is that unlike other vtubers, she has an additional form in Ascended Biboo. She ascends when angry and can then control the emotions of others around her, including gods. She encourages fans to go into “pebble form” to keep safe from this and Biboo’s general ability to inspire greed. Will fans have to pebble more with Koseki Bijou’s new 3D form? Hopefully not, but they’re sure to keep watching either way.