She is interested in learning foreign languages.

As an actual exchange student currently studying in Australia, Haato is able to speak some English.

On 12 September 2019, she made an appearance in hololive's collaboration with Dawn of the Breakers as one of the characters alongisde Natsuiro Matsuri, Shirakami Fubuki, Nakiri Ayame, Oozora Subaru, Sakura Miko, and Ookami Mio.

It was first announced at the end of their karaoke session earlier on 7 July. On 9 July, Haato showcased the swimsuit for her 3D model. She debuted her new 3D model on 17 April. It was announced that the debut date is 17 April. On 12 April, she announced in a stream that she will be receiving a new 3D model. On the next day, she broadcast her 3D model. On 24 January 2019, it was announced that she would debut her 3D model on 25 January. Her Twitter account was opened on while her YouTube channel was created on 24 May although she did not start her activities on YouTube until her self-introduction stream which was live on 2 June. Her mascot is a yellow pig with a sign that says '打ち首' (execution) and stitches around the neck.

For role-playing, she would 'execute' whoever angers her.

She calls her viewers 'senpai' (senior), while her fans are called 「はあとん」(Haa-ton), a combination of her name 'Haato' with the word 「豚（とん）」(pig).

She greets viewers with 'Hello rouge!' Rouge is a french word for 'red.'.Her birthday, 10 August, has a pronunciation similar to 'heart' in Japanese.Her family name 'Akai' means 'red' in Japanese, while 'Haato' is borrowed from the English word 'heart.'.Despite being the first batch in Hololive which majors in live-streaming, uploaded a lot of short videos because the internet connection in Australia is unstable at best. Is actually a dojikko, who sometimes talks about the embarrassing things she has done in the past, and make questionable comments.She is also interested in foreign language and is able to introduce herself with simple Chinese. An exchange student in the virtual world, currently studying in Australia, claims to know a little bit of English.Classic tsundere, who claims to be always on the 'cold, arrogant' (tsun) side, wants viewers to call her Haato Master 'Haato-sama（はあと様）', though in reality, she is usually more on the 'embarrassed, lovey-dovey' (dere) side.She sometimes talks about the embarrassing things she has done in the past.Sometimes she reappears at the end of the stream to surprise her viewers, or make jokes before finally ending the stream.She finds it embarrassing to cry during streams, so she promises not to cry again. She is a clumsy girl who cries easily, is not good at playing games, and her emotion is usually exacerbated by poor internet connection.She claims to always be cold, arrogant, wants viewers to call her Haato-sama（はあと様）, whereas in reality, she is more on the embarrassed, lovey-dovey side.She is also represented with the emoji '❣️'. Likes red ribbons and heart shapes, which she always puts on her clothing as accessories. A prideful junior, she is arrogant in nature but would start coquetting once she familiarizes herself.15.7 Interpersonal relationship(s) with other VTubersĪkai Haato (赤井はあと) is a female Japanese Virtual YouTuber endorsed by hololive.ĪDORABLE ANIME GIRL IS HERE! - ABOUT ME - Haato's English introduction.13.7 Interpersonal relationship(s) with other VTubers.13.6.2 Donald the Duck and the Elder God (From Cthulhu Mythos).12.6 Interpersonal-relationship(s) with other VTubers.10.7 Love interests (Matsuri's harem of 103 girls).10.6.6 Before she is a VTuber, she is a girl.

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