Aiba Uiha (aibauiha)

Who is Aiba Uiha?

Aiba Uiha is a Japanese VTuber, singer and idol who debuted with NIJISANJI Project in July 2019. She became known for singing and dance-focused performances, including a 3D model reveal and stage appearances with NIJISANJI. Her official affiliation was NIJISANJI Project and she concluded activities with the agency on December 31, 2023 to focus on pursuing an idol path.

Background and mission

Presented as a rookie virtual idol, Aiba Uiha built a repertoire around song covers, choreographed dance videos, and variety livestreams. Her stated direction emphasized developing as an idol and expanding into music and performance work beyond typical live streaming formats.

Creator and studio

Aiba Uiha was created and managed under the NIJISANJI Project, the VTuber talent project operated by ANYCOLOR. She appeared in official NIJISANJI programming, event lineups, and merchandise distributed through NIJISANJI channels.

Visual style and aesthetics

Uiha adopted a blue-themed idol aesthetic with stage-oriented costumes designed for singing and dance. Her presentations moved between 2D and full 3D model performances; her 3D reveal and subsequent music/dance videos emphasized polished choreography and stage lighting.

Content Type & Format

Aiba Uiha's primary output was long-form livestreams and produced uploads on YouTube, where she posted singing covers, dance performance videos, music-video style 3D showcases, and occasional gaming or talk streams. She also used short-form platforms and social posts to share highlights, behind-the-scenes clips, and staged visuals.

Thematically her content centered on idol activities: vocal covers labeled as歌ってみた,踊ってみた style performances, choreography showcases, and music-focused premieres. Aiba Uiha's personality on camera combined an upbeat idol tone with direct fan engagement, and her videos often highlighted both vocal performance and dance skill.

She engaged audiences through scheduled live streams, premiere events, and edited videos on YouTube, alongside posts on X, TikTok and Instagram for shorter updates and visual content. Her content strategy balanced live interaction with produced music and performance pieces that translated well to recorded and streamed formats.

Aiba Uiha Collaborations and Campaigns

NIJISANJI 4th Anniversary LIVE "FANTASIA": NIJISANJI x Aiba Uiha. In 2022 Uiha performed as part of the NIJISANJI 4th Anniversary live program, appearing on the Day 1 stage in a live concert format that mixed group staging with individual song and dance showcases. The performance was presented as an in-person live event with streaming and recorded components, pairing her 3D stage presence with large-scale production visuals. にじさんじボイスドラマ「とりあいボイス」: NIJISANJI voice drama release featuring 相羽ういは & 北小路ヒスイ. Released in 2023, this voice drama product positioned Uiha in a scripted audio project sold through NIJISANJI channels, pairing her voice work with other talents and packaged with digital extras and promotional key visuals.

Technical details and production

Uiha performed with both Live2D and a full 3D model; her 3D reveal was presented in April 2021 and was used for music and dance videos thereafter. Her content combined motion-capture driven choreography for 3D performances with edited video production for music and premiere events.

Narrative and trivia

Within NIJISANJI lore Uiha was framed as a virtual idol who aimed to grow through performance. She was noted in coverage for strong dance ability and for emphasizing choreographed, stage-style presentations during her tenure with the project.