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Nagao Kei (長尾景) is a male Japanese Virtual YouTuber affiliated with NIJISANJI. He debuted as part of the 2020 unit "VΔLZ" alongside Genzuki Tojiro and Kaida Haru.

Introduction Video


【初配信】先に謝っとく。てんやわんやしてごめん。不死鳥の長尾景 【にじさんじ】

Kei's introduction.


An exorcist from the Ouma Empire. In addition to swordsmanship, this young man is also skilled at martial arts and curses (magic).[1]


Kei's personality is rather cheerful and playful despite his serious appearance and his position as the oldest in VΔLZ. He also has a mischievous side that has most often comes out when interacting with Haru. He enjoys singing and often thinks of interesting/unique things to do, which has lead to some diverse content on his channel. With his group mates, he is playful and mischievous, however he tends to be bullied or teased by his NIJISANJI senpai.



Kei's channel was created on 27 February, 2020. He officially debuted on 2 April, 2020, starting his liver activities on Twitter. Later, he made his YouTube debut on 4 April, 2020.


On 15 May, a collab cover of Hail Holy Queen from Sister Act was released, in which he sung with Levi Elipha, Debidebi Debiru, Melissa Kinrenka, Todoroki Kyoko, Sister Cleaire, Sukoya Kana, Hayase Sou and Genzuki Tojiro, making it Kei's first cover song.[2]

On 2 June, he released his first solo cover song, God knows... from The Melancholy of Haruhi Suzumiya.[3]

On 25 August, he released a collab cover with Fumi in which they sang Pair of Wintry Winds (Tsugai Kogarashi), making it Fukeizai's first cover together.

On 21 November, VΔLZ's original song, Ukiyo no Enbu (浮世の演武), was released.[4] The song was composed by Tojiro, while all three wrote the lyrics.

On 14 December, Kei's original song, Kamisama no Negai wo Kanaeta Uta (神様の願いを叶えた歌), was released. The lyrics to the song are a Marshmallow (an anonymous messaging service) that Kei wrote to Fumi in a stream. The song was composed on a different stream together with Tojiro. Tojiro created the instrumental and mixed the song.


On 30 April, Kei revealed his 2.0 brush-up.

On 3 August, he revealed his 3.0 brush-up.

On 25 September, he debuted his first new outfit. Along with it he also got two new hairstyles, a bun to his used-to-be ponytail and short hair. In this outfit, he has a windbreaker (that can be taken off) on top of a white hoodie that bears Muu-chan's face on the hood, black ankle-cut trousers, sneakers, and a lime-green wrist watch.[5]

On 14 November, he revealed his 3rd outfit, which was a matching school uniform outfit with VΔLZ. The three members revealed their outfits in a relay following the same order as their debut, with Tojiro going first, Kei second, and Haru third.




Mascot and Fans

  • Muu-chan (むーちゃん) is a shikigami (god in the form of a small ghost) that serves as somewhat of a mascot to Kei. Muu-chan's appearance resembles a cat with white fur. It has scratches on its right cheek and is depicted holding a staff and a book. In streams, Muu-chan is represented by a portrait that Kei drew.
    • Muu-chan as no specified gender or age.
    • Its birthday is on June 6th.
    • Apparently Muu-chan has blue eyes.
    • Muu-chan can walk on both two legs and four legs. It can also levitate.
    • Tojiro drew the Muu-chan badge for Kei's YouTube membership.
  • Kei's fans are called "16KBG" (ケイボーイ&ガール - Kei's boys and girls).
  • His waiting room phrase is "taiki" (​待機). He greets his viewers with "kon-mabushi~" (こんまぶし〜) and ends his streams with "otsu-mabushi~" (おつまぶし~).



  • Kei's voice has been noted to resemble fellow NIJISANJI member Ibrahim, so much so that he even had a collaboration stream with Melissa Kinrenka where he impersonated Ibrahim in an attempt to prank Furen E Lustario.[10]
  • Kei once ordered a pizza to Haru's house without permission after Haru replied to Genzuki's tweet saying he wanted to have another pizza party. As a result, the three of them gathered at Haru's house to have a pizza party and an impromptu stream where they sang and ate.
  • Like his debut-mates, he likes to sing and does off-collab singing streams with VΔLZ, sometimes performing with the cajon (he's also currently learning the bass).
  • Kei is well-known as a "忖度師" (sontaku master, someone who performs unspoken orders for others) by Livers and fans around, stemming mostly from his collabs with Fumi and his dedication to satisfy her mood and requests, as well as his peers. Examples are:
    • Memorizing the 'Keep Talking and Nobody Explodes' manual in two days in preparation for his collab with Fumi.
    • Writing a Kusomaro anonymously to Fumi because she hadn't been getting any and wanted some, only to be later caught by her. Said kusomaro later ended up being turned into his first original song.
    • Learning morse code as part of his punishment from Tsukiichi. He put his morse code skills up to the test in this Fukeizai collab.
      • He hit 100k subscribers in the stream where he was trying to learn morse code. The title of this stream specifically stated that he didn't want to hit 100k while learning morse code. He told his listeners to forget about it and pretend he got 100k subscribers during the NijiMen singing relay later that night as he finds it much cooler over the morse code stream.
  • Kei has taken the TOEIC (Test of English for International Communication) before and scored an 850 (the average score is around 500), but said he hasn't used his skills for a while and thinks it has dropped to 600. Additionally, on the Eiken Test in Practical English Proficiency, he achieved Grade 2.
    • He has also studied Portuguese before.
  • Kei has an older sister, who he lives with, and a younger brother, making him a middle child. He has mentioned his sister being friendly terms with Tojiro, and that her favourite liver is Gwelu Os Gar.
    • Kei occasionally shares anecdotes about conversations he has with his sister on Twitter and often mentions her on stream.
    • Kei sang "A Whole New World" with his sister in this singing stream.
  • Kei spent 9 hours building a literal mountain around Haru's home in Minecraft in retaliation for a prank Haru played against him, with the help of Genzuki who helped out for the first 3 hours.[11]
    • When Haru played Minecraft after the completion of the mountain, he had difficulty finding his home as the mountain blended in with the rest of the scenery. He now resides inside the mountain.
  • Kei spent a total of 39 hours in 5 days challenging himself to speed run Pokemon Sapphire while memorizing a speed run guide. With the help of two skilled speedrunners coaching him and luck from Tojiro, he managed to beat his own record with the fastest time of 2h 27m 22s.
  • Kei usually tweets his stream schedule for the next day the night before and then reconfirms his schedule when he wakes up.
    • He is prone to oversleeping, so his noon streams are sometimes delayed by 30 minutes.
  • Kei has a poor sense of direction. When he gets lost in Minecraft, he asks his viewers to help him get where he wants to go.
  • Kei is a dual wielder. His katanas are named "Ouka Suijin" (桜華水刃), and are passed down in his family. They can be seen attached to his right leg by a thigh holster. After being asked about the inconvenience of this placement, he said they're attached there "because it's cool" and that he doesn't need to unsheathe his katanas because he can summon them instantly through magic, similar to how the Keyblade is summoned in Kingdom Hearts.
  • He has a lot of life experience, including: swimming, tennis, band, dancing (jazz, ballet), co-ed cheerleading, being a suit actor for hero shows, riding a moped, using long spears and ninja stars, etc.
  • Kei likes cats a lot, especially black cats.

External Links


Twitter hashtags

Further readings

Nijisanji logo (V T E)
First wave

Tsukino Mito (🐰) ·  Yuki Chihiro (🎀💙) ·  Elu (🗼) ·  Higuchi Kaede (🍁) ·  Shizuka Rin (💜) ·  Shibuya Hajime (🌱) ·  Suzuya Aki (🐈) ·  Moira (😇)

Second wave

Mononobe Alice (♥️♠️♦️♣️) ·  Fushimi Gaku (✌) ·  Ienaga Mugi (🌷) ·  Morinaka Kazaki (🐻) ·  Suzuka Utako (🎶) ·  Ushimi Ichigo (🍓) ·  Yuhi Riri (🌇) ·  Kenmochi Toya (⚔️) ·  Gilzaren III (🏰🌕) ·  Fumino Tamaki (🐟)


Kanae (🔫) ·  Akabane Youko (💀) ·  Sasaki Saku (🎋) ·  Honma Himawari (🌻) ·  Makaino Ririmu (🍼) ·  Kuzuha (🎲) ·  Shiina Yuika (👻)


Yamiyono Moruru (🍜) ·  Setsuna (❄️)


Dola (🔥) ·  Hanabatake Chaika (🌵) ·  Azuchi Momo (🍑) ·  Ryushen (🐼) ·  Sister Cleaire (🔔) ·  Suzuki Masaru (☪) ·  Todoroki Kyoko (🐐) ·  Uzuki Kou (🌙) ·  Yashiro Kizuku (🖥) ·  Kanda Shoichi (🔪) ·  Amemori Sayo (☔️) ·  Takamiya Rion (🦅) ·  Asuka Hina (🐤) ·  Maimoto Keisuke (👨‍🌾) ·  Debidebi Debiru (🚪👿) ·  Rindou Mikoto (🍶⚜️) ·  Joe Rikiichi (🤡🎈) ·  Machita Chima (🐹) ·  Sakura Ritsuki (🌸🌙) ·  Belmond Banderas (🥃) ·  Yaguruma Rine (🌽) ·  Yumeoi Kakeru (🎤) ·  Kuroi Shiba (🐕🐾)


Hassaku Yuzu (🍊) ·  Nakao Azuma (☀️) ·  Naruto Kogane ·  Umiyashano Kami (⛩) ·  Tsukimi Shizuku (🎑💊) ·  Achikita Chinami (🍬) ·  Izumo Kasumi (🦑)


Harusaki Air (🍭) ·  Naruse Naru (🎙) ·  Kaminari Poaro (retired) ·  Kurohane Kuroto (retired)

2019 wave

Warabeda Meiji (🐺🍎) ·  Gundo Mirei (🐽) ·  Yuzuki Roa (🌖) ·  Onomachi Haruka (♨️) ·  Kataribe Tsumugu (📘🧂) ·  Seto Miyako (📷💚) ·  Inui Toko (🍹) ·  Ange Katrina (⚖) ·  Lize Helesta (👑) ·  Saegusa Akina (🌶) ·  Aizono Manami (🦀💕) ·  Yukishiro Mahiro (🌐✨) ·  Ex Albio (🛡) ·  Levi Elipha (🔲) ·  Hayama Marin (🍃🗻) ·  Nui Sociere (🎃) ·  Hakase Fuyuki (⚗) ·  Kagami Hayato (🏢) ·  Yorumi Rena (🎩🐤) ·  Mayuzumi Kai (💻💙) ·  Ars Almal (📕) ·  Aiba Uiha (🍮💎) ·  Amamiya Kokoro (🎐) ·  Eli Conifer (🌲) ·  Ratna Petit (🐻💎) ·  Hayase Sou (🏃‍♀️💨) ·  Sukoya Kana (💉💘) ·  Shellin Burgundy (🧐) ·  Fumi (🔖) ·  Hoshikawa Sara (🌟) ·  Yamagami Karuta (🎴) ·  Matsukai Mao (💥) ·  Emma★August (★) ·  Luis Cammy (❤️🦋) ·  Fuwa Minato (🥂✨) ·  Shirayuki Tomoe (👠⛓️) ·  Gwelu Os Gar (😎) ·  Mashiro (🧷) ·  Naraka (✖🍳) ·  Kurusu Natsume (🐏🎵)


Kudou Chitose (🧠) ·  Shindo Raito (terminated) ·  Otogibara Era (🏰🕛) ·  Suzuhara Lulu (🎨)

2020 wave

Furen E Lustario (🎠) ·  Melissa Kinrenka (🐝) ·  Ibrahim (💧) ·  Nagao Kei (☯️) ·  Genzuki Tojiro (🎻🛵) ·  Kaida Haru (🌞) ·  Sorahoshi Kirame (🌌) ·  Asahina Akane (🦖🎖) ·  Suo Sango (💞🦩) ·  Todo Kohaku (🍯) ·  Kitakoji Hisui (✳) ·  Nishizono Chigusa (🐬🌱)

Retired Kingyozaka Meiro (🩰)
2021 wave

Axia Krone (🐈‍⬛) ·  Lauren Iroas (🗝💸) ·  Leos Vincent (🥼🌱🐱) ·  Oliver Evans (🍵) ·  Lain Paterson (❤️‍🔥)


Tenkai Tukasa (🎲) ·  Fairys-chan (🐦)

Intl. branches

VirtuaReal ·  Nijisanji ID ·  Nijisanji IN (dissolved branch) ·  Nijisanji KR ·  Nijisanji EN

(1) Programs merged with main Nijisanji group.

(2) Program terminated; members are active but are no longer affiliated with Nijisanji.


  1. Kei's corporate profile on the official NIJISANJI website. (n.d.).
  2. Elipha, L. [レヴィ・エリファ-Levi Elipha-]. (2020, May 15). 【合唱コラボ】Hail Holy Queen【にじさんじ/レヴィ・エリファ】 [Video File]. YouTube.
  3. Nagao, K.. (2020, June 2). 【歌ってみた】God knows…/涼宮ハルヒ(CV平野綾)【涼宮ハルヒの憂鬱】【長尾景cover】【にじさんじ】 [Video File]. YouTube.
  4. Genzuki, T. [弦月 藤士郎 / Genzuki Tojiro【にじさんじ】]. (2020, November 21). 【オリジナル曲】浮世の演舞 -Full ver.-/VΔLZ【甲斐田晴/弦月藤士郎/長尾景/にじさんじ】 [Video File]. YouTube.
  5. Nagao, K. [長尾 景 / Nagao Kei【にじさんじ】]. (2021, September 25). 【#長尾景断髪式】前を向いて歩こう【長尾景/にじさんじ】 [Video File]. YouTube.
  6. Vtuber Most Cooperatitive Tournament #2 [Web Page]. (n.d.). Liquipedia - Apex Legends.
  7. Vtuber Most Cooperatitive Tournament #3 [Web Page]. (n.d.). Liquipedia - Apex Legends.
  8. BFJ. (2021, August 30). [Battlefield Japan Community BFJ Streamer Cup] [Tweet]. Twitter.
  9. Based on Ichikara's .link page
  10. Nagao K. [長尾 景 / Nagao Kei【にじさんじ】]. (2020, April 25). Nagao Kei and Meifu Empire Impersonation Prank Stream [Video File]. YouTube.
  11. Nagao, K. [長尾 景 / Nagao Kei【にじさんじ】]. (2020, October 4). Kei building a mountain over Haru's house Minecraft Stream [Video File]. YouTube.