Natsuiro Matsuri (夏色まつり) is a female Japanese Virtual YouTuber endorsed by hololive.
Matsuri is an energetic, highly expressive, and chaotic individual who seems to enjoy doing outrageous things purely for their comedic value. Some examples include pressuring fellow Hololive member Minato Aqua into sleeping next to her in a Minecraft stream, posting a suggestive video on Shirakami Fubuki's Twitter of her moaning Fubuki's name, and groping Hoshimachi Suisei's actress.
However, underneath her naughty and tomboyish exterior, Matsuri is actually a sensitive, emotionally intelligent young girl who can speak frankly and maturely about a variety of topics. She will sometimes host audio only streams right before she goes to sleep or while in the bath and simply talk to her viewers about her life and her inner thoughts.
Her Twitter account opened on 16 May 2018 while her YouTube channel was created on 25 May although she did not start her activities on YouTube until her first stream on 2 June.
On 1 November, she debuted her second 2D model.
On 1 April, she announced that she would get her 3D model in the middle of April.
On 3 April commemorating this, she built a model of her in 3D in Minecraft. She later announced the debut date to be on 15 April. She showed her 3D model in a stream where she also mentioned several collaborations with several other VTubers such as DeepWebUnderground and Pinky Pop Hepburn.
On 6 August, Matsuri showcased her 3D model swimsuit. 
On 23 January, her YouTube channel became demonetized. A few minutes later, she said on her Twitter account that it was due to one of the songs she sung, claiming it was a mistake on Youtube's side, so she would reapplied for monetization the next month.
On 24 January along with the other hololive girls up to the third generation, she debuted her 3D idol outfit at hololive's 1st fest Nonstop Story.
On 1 March, she teased on Twitter a new 2D model for her next stream. On 2 March, she revealed this 2D model, unlike her normal model, in this one Matsuri is a 6 year old girl and acts for the most part like one.
- On 23 May 2019, she made an appearance in hololive's collaboration with Dawn of the Breakers as one of the characters alongisde Roboco, Aki Rosenthal, Shirakami Fubuki, Minato Aqua, Yuzuki Choco, Oozora Subaru, and Ookami Mio.
- On 27 November 2019, she made an appearance in hololive's collaboration with Azur Lane as one of the characters, alongside Shirakami Fubuki, Nakiri Ayame, Ookami Mio, Murasaki Shion, Minato Aqua and Tokino Sora, she was available from 27 November to 10 December.
She has a mascot called Ebi Frion, part-lion part-fried shrimp. This is a pun on the words "Ebifurai" (fried shrimp) and "lion".
- She has openly admitted to being a lolicon.
- Her mother, known as 'Mamatsuri', has been on streams with her when they do Q&As.
- She has a younger brother who has appeared on some of her streams before.
- Matsuri Channel 夏色まつり - YouTube channel
- Natsuiro Matsuri's corporate profile on hololive.tv
- @natsuiromatsuri - Natsuiro Matsuri's official Twitter account
- 夏色祭Official - Natsuiro Matsuri's official bilibili channel
- @natsuiromatsuri - Natsuiro Matsuri's official OPENREC.tv channel
- 夏色まつり - Nicovideo Encyclopedia
- 夏色まつり - Pixiv Encyclopedia
- 夏色まつり - unofficial hololive Seesaawiki
- 夏色祭 - Moegirl Encyclopedia
- ↑ Height chart (as of 31 May 2019)
- ↑ natsuiromatsuri (2018, October 7) フブキへ。ルイズコピペです。 #すこん部 [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1048810611981701121
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり] (2018, November 1) 【VTuber】夏色まつりの新衣装発表だって！！見なきゃ！！！【５か月記念】【夏色まつり/ホロライブ】[Video File] Retrieved from https://youtu.be/DQE2J9SqTrc?t=232
- ↑ natsuiromatsuri. (2019, April 1). イベントでお知らせしましたがTwitterで改めて！！！
#ばーちゃるぱーく [Tweet]. Retrieved from https://twitter.com/status/1112677576483303425
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり]. (2019, April 3) 【Minecraft】3D化するから自分作ってみる！！！ [Video File]. Retrieved from https://youtu.be/QzeSRv7Y8NE/
- ↑ Cover Corporation. (2019, April 12). ホロライブ所属VTuber「夏色まつり」「赤井はあと」3Dお披露目配信実施のお知らせ [Press release]. Retrieved from https://prtimes.jp/main/html/rd/p/000000054.000030268.html
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり]. (2019, April 15) 【#夏色まつり3D】ついに動く身体を手に入れた！！！【3D生放送】 [Video File]. Retrieved from https://youtu.be/qGn0dVLJwSc/
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり] (2019, August 6) 【3D放送】JKの水着姿見たくないですか？ [Video File]. Retrieved from https://youtu.be/tbUIYEQyNlI/
- ↑ natsuiromatsuri (2020, January 1) 【新衣装お披露目】新衣装チキンレースｗｗこれくらいなら見せてもセーフやろｗｗｗ【ホロライブ/夏色まつり】 1月1日18:30～ お年玉はない・・・すか・・・ 待機場所↓ https://youtube.com/watch?v=DHMUymmD-eE… サムネは配信後変えます('ω')期待してて #夏まつch [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1212119378142978048
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり] (2020, January 1) 【新衣装お披露目】新衣装チキンレースｗｗこれくらいなら見せてもセーフやろｗｗｗ【ホロライブ/夏色まつり】[Video File] Retrieved from https://www.youtube.com/watch?v=DHMUymmD-eE
- ↑ natsuiromatsuri (2020, January 23) まって……収益化さん……？？？？？？？？[Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1220527846889644033
- ↑ natsuiromatsuri (2020, January 23) 歌ってみたらしい [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1220528690561351680
- ↑ natsuiromatsui (2020, January 23) 調べたらAIの誤認説が濃厚らしいので一ヶ月後にもう1回申請してみます！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！ [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1220532443767169024
- ↑ hololive_En (2020, January 24) [Songs Performed!] Dream☆Story (Sora, Roboco, Miko, AZKi, Suisei) Yumemiru Sora e (1st Gen) Go-toubun no Kimochi (2nd Gen) #とまらないホロライブ Photo By Ayo Kajino [Tweet] Retrieved from https://twitter.com/hololive_En/status/1220676990061010946/photo/3
- ↑ natsuiromatsuri (2020, January 30) 収益化戻った！！？！？？！？！？！？！？！？ [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1222994607081811968
- ↑ hololive_En (2020, January 30) [Amazing News] Our favorite princess, Natsuiro Matsuri ( @natsuiromatsuri ) has managed to get her monetization back. We're proud of you! Noel ( @shiroganenoel ) will re-apply tomorrow. Here's hoping our other girls manage to get sorted out too. [Tweet] Retrieved from https://twitter.com/hololive_En/status/1223076667200917504
- ↑ natsuiromatsuri (2020, March 1) 【マシュマロ雑談】おさなくなりました。まつり（６）です。【ホロライブ/夏色まつり】 3月2日23:00〜 おいたんきてね！！ 待機場所 https://youtube.com/watch?v=xVoHUoReydM… おはなしすゆ～！！！！！！！！！！！ #夏まつch [Tweet] Retrieved from https://twitter.com/natsuiromatsuri/status/1234129063624638464
- ↑ Natsuiro, M. [Matsuri Channel 夏色まつり] (2020, March 2) 【マシュマロ雑談】おさなくなりました。まつり（６）です。【ホロライブ/夏色まつり】[Video File] Retrieved from https://youtu.be/xVoHUoReydM
- ↑ Official Dawn of the Breakers Website - hololive Crossover Continues!
- ↑ AzurLane_EN (2019 November 26) Event Period [Tweet] Retrieved from https://twitter.com/AzurLane_EN/status/1199372247120498688/photo/2
- ↑ [lyger VTuber translations] (2020, January 6) Natsuiro Matsuri – Oh, Brother! [Video File] Retrieved from https://youtu.be/3Kqi5ma8_q0