Starting in 2016, Kizuna AI was originally managed directly by Activ8, the company that created her, under the name Project A.I.

[25][26] Kizuna's YouTube channels are thought to be managed by an entire production crew,[27] and the choice to remain anonymous comes from the wish to keep the concept of a virtual idol intact.

[37] Kizuna is aware that she is a virtual character,[38] and claims that she is an independent artificial intelligence (hence the "AI" in her name).

Kizuna is designed as a young and beautiful 2.5D animated girl with moe elements, which attracts many YouTube users.

[21][30] The hairband has a double-leaf heart-shaped design, corresponding to the word "Ai", meaning "love", in her name, and Kizuna's sleeveless white top brings about a futuristic aesthetic.

[42] Kizuna is able to livestream and record videos in a virtual environment; this is generally considered to rely on the freeware MikuMikuDance.

[22][27][29][43][39] MikuMikuDance has often been used in the videos of Vocaloid pop music,[25][44] allowing users to import and control the 3D models of virtual characters such as Hatsune Miku.

[17] The production crew also wishes for the audience to get in touch with and experience the newest technology, even allowing users to interact directly with Kizuna in virtual space.

[39] With over two million subscribers as of October 2018, Kizuna is the most popular virtual personality on the site and one of its most-watched Japanese content creators.

[59] Apart from her YouTube channels and official website, Kizuna has also created Twitter, Instagram, and TikTok accounts to facilitate interaction with fans.

[42] On the newly created "A.I.Games" channel, Kizuna would periodically post videos of her doing a commentary while playing Avabel Online, a MMORPG designed by Asobimo for smartphones.

[70] She also voiced Website Manager Hachi in the anime television series Magical Girl Site, which aired from the same day.

[71] To celebrate reaching 2 million subscribers on "A.I.Channel" on 15 July 2018, Kizuna released her first Eurodance digital single "Hello, Morning".

[72] On 1 March 2019, Dutch music duo W&W released a song called The Light in which Kizuna features as a vocalist and as a dancer.

On 30 January 2021, Kizuna AI released a clothing collaboration with the Dutch streetwear brand Kaomoji.

Guests for the Los Angeles live show included TeddyLoid and Nyanners who have a large number of followers in the United States.

[78] The anime project was later confirmed to be a television series titled Kizuna no Allele that aired from April to June 2023, on TV Tokyo and other networks.

[79][80] The series is produced by Wit Studio and Signal.MD and directed by Kenichiro Komaya, with Deko Akao writing the scripts, Shiori Asaka and Niina Morita designing the characters and serving as chief animation directors alongside Mizuki Takahashi, and Go Sakabe composing the music.

Videos sometimes add content of a more imaginative or animated style, though bugs in the software may cause her to move somewhat erratically at times.

[25] Video content includes chatting, sharing life stories,[86][87] answering questions, fulfilling requests,[38] hosting discussions on trending topics,[27] interviews,[26] "Let's Plays",[4] dancing,[88] challenges,[43] and drawing.

[39] She has discussed artificial intelligence,[25] virtual reality, games, things she likes,[44] and how she wants a Wikipedia page dedicated to herself.

Kizuna has also attempted to describe English words in Quick, Draw!, explore Tokyo virtually using Google Maps,[86][89] and talk with other AI such as Apple's iPhone Assistant Siri.

[48] Also, in the regular YouTube market, virtual streaming can be an alternative for those who are unable or do not wish to reveal their face in front of the camera, because exquisite character designs can make up for the imperfections in real people.

[27] For example, Black AI is another artificial intelligence who appears several times in Kizuna's videos, and seems to be animated in the same fashion.

[citation needed] Tubefilter writer Sam Gutelle states that even though characters like Kizuna may be seen as oddities now, they will become more common in the future.

The Verge columnist Rich McCormick feels that Kizuna is different from other content creators as she can technically play games as long as she wants without the need for food and sleep.

[25] The BBC thinks that the selling point of virtual characters is that they are not like other YouTubers, as their appearance will never age and related development is still in its beginning stages.

[68][93] Yuki Senda, a professor at Musashi University, claimed that Kizuna nodding along with the panel instead of contributing constructively to the conversation was more of an issue than her character design, due to her mannerisms reinforcing gender roles in women.

[94] Junko Saeki, a professor at Doshisha University, also suggested that Kizuna's quietness may be perpetuating a new wave of orientalism because of her role as one of Japan's primary cultural exports.

[96] On 25 December 2016, Kizuna's producers decided to put up her MikuMikuDance 3D model for free download and edits on her official site.