A new idol in the virtual world.
Uiha made her debut on 28 July 2019.
On 30 December she revealed her new outfit and hairstyle.
On 11 April she participated in NIJISANJI's Singing Stream Relay.
On 4 June she revealer her 2.0 modeling.
On 25 June she revealed her new outfit and hairstyle.
On 9 April, it was announced that Uiha would receive her 3D model. It will be revealed on 17 April. She debuted her 3D model on the 17 April.
- Uiha calls her fans ういふぁん (Ui-fan)
- Blues 「ぶるーず」: Uiha, Mayuzumi Kai, and Ars Almal. (These three debuted together.)
- Maigo Purozu 「まいごぷろず」: Uiha, Belmond Banderas, Yukishiro Mahiro. (Units that play Minecraft together, and do mining)
- Kei Ai 「けいあい」: Uiha and Nagao Kei.
- Uisupi 「ういすぴ」: Uiha and Kitakoji Hisui.
- She shares the same character designer with Chae Ara, Kamishiro Rita, Tamachi Kanna, Kisaragi Ren and Tobi Shigoku.
- Color: #324CAC 
- Aiba has poor eyesight, she cannot see anything with the naked eye. She wears daily contact lenses or glasses sometimes. ( Aiba's contact lenses frequency is 3.25 left and right )
- She is extremely good at Mario Kart, to the point where she holds multiple records for fast times on the game.
- 相羽ういは〖Aiba Uiha〗にじさんじ所属 - YouTube channel
- Aiba's corporate profile on the official NIJISANJI website
- 相羽 ういは🍮💎 - Twitter account
- @aibauiha - TikTok account
- u/Uiha_Aiba - Reddit account
- 相羽ういは (あいばういは) - Unofficial NIJISANJI wiki
- 相羽ういは - Nicovideo Encyclopedia
- 相羽ういは - Pixiv Encyclopedia
- 相羽初叶 - Moegirl Encyclopedia
- 시이나 유이카 - Namu Wiki