The president of the toy company "Kagami Industrial (加賀美インダストリアル)". He debuted as a Liver to promote his company's products.
As CEO of a toy company, Hayato maintains a youthful spirit despite the demands of the adult working world. However, due to the nature of his job, he maintains respectful language and etiquette at all times when addressing his viewers. During collaborations, Hayato usually provides commentary or acts as the straight man to others' antics. His solo streams have a calm, relaxing atmosphere.
However, Hayato also possesses a competitive spirit and hates to lose.
Hayato made his YouTube debut on 6 July 2019.
On 3 June, Hayato debuted the 2.0 brushup of his Live2D model.
On 22 July, on Maimoto Keisuke's 3D debut stream, it was announced that Hayato, along with Ex Albio will make their official 3D model debut on YouTube. Hayato held his 3D debut stream on 10 August.
On 11 June, he released his second original song, "Tremolo Moon".
On 29 June, he released his third original song, "PIERCE".
On 17 September, Hayato debuted the 3.0 brushup of his Live2D model.
On 21 October, it was announced on Nijisanji YouTube channel that Hayato, Kenmochi Touya, Fuwa Minato, and Kaida Haru were debuting as a unit under the name "ROF-MAO" (ろふまお). They have their own official YouTube channel and Twitter account. They will have regular program called "ROF-MAO Juku" (ろふまお塾, ROF-MAO Cram School) on their official channel.
- Main page: Kagami Hayato/Discography
|P.F.M.||as le jouet||9 May 2020|
|Digital Release • Music Video|
|PALETTE 002 - Nijiiro no Puddle||as Nijisanji||25 February 2021|
|Digital Release • Music Video • YouTube|
- On 13 February 2020 Hayato performed in the Zepp concert tour Nijisanji JAPAN TOUR 2020 Shout in the Rainbow! at the Zepp Fukuoka venue, revealing his 3D model for the first time.
- On 19 September 2020, Hayato performed on the second day of the Kyo to Aki no Nijisanji live event at the annual Kyoto International Manga Anime Fair, alongside Yorumi Rena and Hakase Fuyuki.
- "ROF-MAO" 「ろふまお」 - Hayato, Kenmochi Touya, Fuwa Minato, and Kaida Haru.
- Officially debuted as a unit on 21 October 2021. They are the second Nijisanji unit that has its own YouTube channel after ChroNoiR. The name was derived from internet slang ROFL-LMAO.
- The unit aim to deliver contents that can make them grow to be "Good Guys" and "Cool Adults" by overcoming trials.
- They have regular program called "ROF-MAO Juku" (ろふまお塾, ROF-MAO Cram School) on their YouTube channel every Thursday at 10 PM (JST).
- Media: Website | YouTube | Twitter | Instagram
#ろふまお - General tag
#ろふあーと - Fan Art tag
#ろふまお塾 - ROF-MAO Juku
- "SMC-gumi" 「SMC組」 (Sumeshi-gumi, SMC Group) - Hayato, Hakase Fuyuki, and Yorumi Rena (These three debuted together. SMC is an acronym for their respective roles: Scientist (Fuyuki), Magician (Rena), and CEO (Hayato). )
- "le jouet" - Hayato, Ryushen, and Yumeoi Kakeru
- "NijiRock" 「にじロック」 - Hayato, Todoroki Kyoko, Saegusa Akina, Ryushen, Amemori Sayo, and Joe Rikiichi
- "Mabuten" 「魔武天」 (short for "Mabudachi Tempest") - Hayato, Amamiya Kokoro, Ars Almal, Kaida Haru, Shellin Burgundy, Honma Himawari, and Fuwa Minato.
- "VACHSS" - Hayato, Kuzuha, Kanae, Fuwa Minato, Kenmochi Toya, and Yumeoi Kakeru.
The group's name stands for Vampire, Angel, CEO, Host, Student, Singer/Songwriter.
- Color: #B9ADB9 
- Hayato is a fan of heavy rock and metal, and is capable of singing/shouting with death metal vocal techniques.
- He has the same illustrator as Rikka from Holostars.
- Apparently, Hayato isn't so good at tying bow knot.
- He once bought a 80,000 yen bike impulsively after reading Yowamushi Pedal manga.
- Hayato Kagami - YouTube Channel
- Hayato's corporate profile on the official Nijisanji website
- @H_KAGAMI2434 - Kagami Hayato's official Twitter account
- #加賀ミーティング - Stream talk
- #加画美 - Fan art
- #前加画美 - Fan art (NSFW)
- #カガミノボイス - Commentary on released voice dramas
- 加賀美ハヤト - Unofficial Nijisanji Wiki
- 加賀美ハヤト - Nicovideo Encyclopedia
- 加賀美ハヤト - Pixiv Encyclopedia
- 加贺美隼人 - Moegirl Encyclopedia
- Kagami Hayato's corporate profile on the official Nijisanji website
- Keisuke, M. [舞元啓介] (2020, July 22) 【3Dお披露目】34歳独身農家の3Dとは【にじさんじ/#まいもと3D】 [Video File] Retrieved from: https://youtu.be/43paQrO4oHQ?t=3910
- @ROF_MAO. (2021, October 21). ROF-MAO Debut Announcement [Tweet]. Twitter.
- Nijisanji JAPAN TOUR 2020 Shout in The Rainbow! Official Website
- ROF-MAO / ろふまおチャンネル【にじさんじ】. (2021, October 21). 【絶叫】足つぼマッサージがエグすぎて全員悶絶！ [Video]. YouTube.
- Based on Ichikara's .link page