Unnämed (fans fondly call them 'U-san') is a Japanese-Korean English speaking streamer and singer-songwriter on YouTube, referring to themselves as a "musician with Live2D". They primarily focus on releasing original songs and covers. Occasionally, they stream on YouTube and do live spaces on their Twitter.
They redebuted on Twitch on 11 April 2026.

Unnämed is a musician whose story intertwines tragedy, rebirth, and passion for music. Once a rising musician whose life ended on the eve of a long-awaited concert, they forged a pact with the demon Mephistopheles to return to the stage.
Performing in Black (or commonly referred to as 'Kuro' by fans) as their base form and in radiant White (or 'Shiro') when unleashing their true power.
Known for a powerful and versatile voice that spans angelic highs to resonant lows, U-san draws inspiration from rock, often singing even the highest notes in chest voice to deliver performances filled with raw strength and emotional depth.
For them, singing is more than a career, it is a lifelong devotion, and each performance, from soaring anthems to intimate ballads and explosive rock numbers, reflects their unique tone, expressive style, and enduring love for the stage.